Allah says in the Holy Quran:

Whoever comes [on the Day of Judgement] with a good deed will have ten times the like thereof [to his credit], and whoever comes with an evil deed will not be recompensed except the like thereof; and they will not be wronged. [6:160]

Allah also says:

Whoever does an evil deed will not be recompensed except by the like thereof; but whoever does righteousness, whether male or female, while he is a believer - those will enter Paradise, being given provision therein without account. [40:40]

Allah also says:

Whoever comes [at Judgement] with a good deed will have better than it, and they, from the terror of that Day, will be safe. [27:89]

Allah also says:

Whoever comes [on the Day of Judgement] with a good deed will have better than it; and whoever comes with an evil deed - then those who did evil deeds will not be recompensed except [as much as] what they used to do. [28:84]

As we can clearly see from these Ayat. A good deed will be multiplied, however, a bad deed will stay itself, just 1 bad deed regardless of where the person is or when it occurs. This is one of the mercies of Allah.

Some scholars use the following Ayah to say that Bad deeds in certain places are bad:

Indeed, those who have disbelieved and avert [people] from the way of Allah and [from] al-Masjid al-Haram, which We made for the people - equal are the resident therein and one from outside; and [also] whoever intends [a deed] therein of deviation in religion - We will make him taste of a painful punishment.[22:25]

However, you can clearly see this Ayah speaking about the Quresh people who used to worship Idols at the Kabba, which this forbids it. It clearly says deviation in religion الحاد which translated to disbelieving. This Ayah mentions nothing about sins or wrongdoings.

وَقَدْ رَوَى الْحَافِظُ أَبُو الْقَاسِمِ التَّمِيمِيُّ فِي التَّرْغِيبِ ثَنَا سُلَيْمَانُ بْنُ إبْرَاهِيمَ ثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدِ ابْنِ حَمْدَيْهِ ثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ إبْرَاهِيمَ ثَنَا مُحَمَّدُ بْنُ أَحْمَدَ بْن أَبِي الْعَوَّامِ ثَنَا أَبُو خَلَفُ بْنُ خَلِيفَةَ عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي مُلَيْكَةَ عَنْ الْأَعْمَش عَنْ أَبِي صَالِحٍ عَنْ أَبِي هُرَيْرَةَ مَرْفُوعًا فَذَكَرَهُ وَفِي آخِرِهِ { فَاتَّقُوا شَهْرَ رَمَضَانَ فَإِنَّ الْحَسَنَاتِ تُضَاعَفُ فِيهِ وَكَذَلِكَ السَّيِّئَاتُ } وَهُوَ خَبَرٌ ضَعِيفٌ .

 

Narrated Alhafid Abu Kassim Altayami, .. (list of names of narrations) ... narrated from Abu Huriria at the end: "Beware of the month of Ramadan, that good and bad deeds are increased during it" - However, this was a very weak narration.

As we can clearly see from the first Ayah. Those who come with a Sin, they will only be judge on it.

Based on the above proofs, it means that the sin in The night of Qadr (and everywhere/everytime) is counted as 1 sin and not multiplied.

Allah says in the Holy Quran:

Whoever comes [on the Day of Judgement] with a good deed will have ten times the like thereof [to his credit], and whoever comes with an evil deed will not be recompensed except the like thereof; and they will not be wronged. [6:160]

Allah also says:

Whoever does an evil deed will not be recompensed except by the like thereof; but whoever does righteousness, whether male or female, while he is a believer - those will enter Paradise, being given provision therein without account. [40:40]

Allah also says:

Whoever comes [at Judgement] with a good deed will have better than it, and they, from the terror of that Day, will be safe. [27:89]

Allah also says:

Whoever comes [on the Day of Judgement] with a good deed will have better than it; and whoever comes with an evil deed - then those who did evil deeds will not be recompensed except [as much as] what they used to do. [28:84]

As we can clearly see from these Ayat. A good deed will be multiplied, however, a bad deed will stay itself, just 1 bad deed regardless of where the person is or when it occurs. This is one of the mercies of Allah.

Some scholars use the following Ayah to say that Bad deeds in certain places are bad:

Indeed, those who have disbelieved and avert [people] from the way of Allah and [from] al-Masjid al-Haram, which We made for the people - equal are the resident therein and one from outside; and [also] whoever intends [a deed] therein of deviation in religion - We will make him taste of a painful punishment.[22:25]

However, you can clearly see this Ayah speaking about the Quresh people who used to worship Idols at the Kabba, which this forbids it. It clearly says deviation in religion الحاد which translated to disbelieving. This Ayah mentions nothing about sins or wrongdoings.

وَقَدْ رَوَى الْحَافِظُ أَبُو الْقَاسِمِ التَّمِيمِيُّ فِي التَّرْغِيبِ ثَنَا سُلَيْمَانُ بْنُ إبْرَاهِيمَ ثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدِ ابْنِ حَمْدَيْهِ ثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ إبْرَاهِيمَ ثَنَا مُحَمَّدُ بْنُ أَحْمَدَ بْن أَبِي الْعَوَّامِ ثَنَا أَبُو خَلَفُ بْنُ خَلِيفَةَ عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي مُلَيْكَةَ عَنْ الْأَعْمَش عَنْ أَبِي صَالِحٍ عَنْ أَبِي هُرَيْرَةَ مَرْفُوعًا فَذَكَرَهُ وَفِي آخِرِهِ { فَاتَّقُوا شَهْرَ رَمَضَانَ فَإِنَّ الْحَسَنَاتِ تُضَاعَفُ فِيهِ وَكَذَلِكَ السَّيِّئَاتُ } وَهُوَ خَبَرٌ ضَعِيفٌ .

Narrated Alhafid Abu Kassim Altayami, .. (list of names of narrations) ... narrated from Abu Huriria at the end: "Beware of the month of Ramadan, that good and bad deeds are increased during it" - However, this was a very weak narration.

As we can clearly see from the first Ayah. Those who come with a Sin, they will only be judge on it.

Based on the above proofs, it means that the sin in The night of Qadr (and everywhere/everytime) is counted as 1 sin and not multiplied.

“Whoever brings a good deed (Islamic Monotheism and deeds of obedience to Allaah and His Messenger) shall have ten times the like thereof to his credit, and whoever brings an evil deed (polytheism, disbelief, hypocrisy, and deeds of disobedience to Allaah and His Messenger) shall have only the recompense of the like thereof, and they will not be wronged” [al-An’aam 6:160]

“… and whoever inclines to evil actions therein [i.e., in al-Masjid al-Haraam in Makkah] or to do wrong (i.e. practice polytheism and leave Islamic Monotheism), him We shall cause to taste from a painful torment” [al-Hajj 22:25]

Many scholars (which the links above mentions) says that the place and time does effect the increase of the number of sins. So doing Adultery in the Masjid counts more sins than doing it elsewhere. The same goes for the timing, doing the sin in Jumma/Ramdan/The night of Qadr is worst than doing it else where. This is the opinion of scholars like Alalbani and similar scholars.

If you decide to take that opinion, then yeah a sin in the Night of Qadr is worst than at other times.

However, keep in mind that no scholar even mentioned the X factor (how many times it is worst, that is something they think is unknown). So you can't say because a hasana is 1000x in Night of Qadr, sin is 1000x as well.

Source: http://islamqa.info/ar/38213

Whoever comes [on the Day of Judgement] with a good deed will have ten times the like thereof [to his credit], and whoever comes with an evil deed will not be recompensed except the like thereof; and they will not be wronged. [6:160]

Whoever does an evil deed will not be recompensed except by the like thereof; but whoever does righteousness, whether male or female, while he is a believer - those will enter Paradise, being given provision therein without account. [40:40]

Allah also says:

Whoever comes [at Judgement] with a good deed will have better than it, and they, from the terror of that Day, will be safe. [27:89]

Allah also says:

Whoever comes [on the Day of Judgement] with a good deed will have better than it; and whoever comes with an evil deed - then those who did evil deeds will not be recompensed except [as much as] what they used to do. [28:84]

As we can clearly see from these Ayat. A good deed will be multiplied, however, a bad deed will stay itself, just 1 bad deed regardless of where the person is or when it occurs. This is one of the mercies of Allah.

Some scholars use the following Ayah to say that Bad deeds in certain places are bad:

Indeed, those who have disbelieved and avert [people] from the way of Allah and [from] al-Masjid al-Haram, which We made for the people - equal are the resident therein and one from outside; and [also] whoever intends [a deed] therein of deviation in religion - We will make him taste of a painful punishment.[22:25]

However, you can clearly see this Ayah speaking about the Quresh people who used to worship Idols at the Kabba, which this forbids it. It clearly says deviation in religion الحاد which translated to disbelieving. This Ayah mentions nothing about sins or wrongdoings.

وَقَدْ رَوَى الْحَافِظُ أَبُو الْقَاسِمِ التَّمِيمِيُّ فِي التَّرْغِيبِ ثَنَا سُلَيْمَانُ بْنُ إبْرَاهِيمَ ثَنَا عَبْدُ اللَّهِ بْنُ مُحَمَّدِ ابْنِ حَمْدَيْهِ ثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ إبْرَاهِيمَ ثَنَا مُحَمَّدُ بْنُ أَحْمَدَ بْن أَبِي الْعَوَّامِ ثَنَا أَبُو خَلَفُ بْنُ خَلِيفَةَ عَنْ عَبْدِ اللَّهِ بْنِ عَبْدِ اللَّهِ بْنِ أَبِي مُلَيْكَةَ عَنْ الْأَعْمَش عَنْ أَبِي صَالِحٍ عَنْ أَبِي هُرَيْرَةَ مَرْفُوعًا فَذَكَرَهُ وَفِي آخِرِهِ { فَاتَّقُوا شَهْرَ رَمَضَانَ فَإِنَّ الْحَسَنَاتِ تُضَاعَفُ فِيهِ وَكَذَلِكَ السَّيِّئَاتُ } وَهُوَ خَبَرٌ ضَعِيفٌ .

Narrated Alhafid Abu Kassim Altayami, .. (list of names of narrations) ... narrated from Abu Huriria at the end: "Beware of the month of Ramadan, that good and bad deeds are increased during it" - However, this was a very weak narration.

As we can clearly see from the first Ayah. Those who come with a Sin, they will only be judge on it.

Based on the above proofs, it means that the sin in The night of Qadr (and everywhere/everytime) is counted as 1 sin and not multiplied.