As some of you know, A3's have this habit of the doors freezing shut when temp of about -2 occur, mine is no exception.
It would seems it is worst when it has either just rained during the day, snow or ice has defrosted and then frozen again.
I had taken mine in several times to my local dealer, they have been really good about all of it, Last Thursday I get a call from Katherine to tell me she has received correspondance from Audi about this matter, it went a little like this " Audi are aware of some A3's having issues with the doors freezing shut and will be sending a lubricant to fix the issue"
This Thursday she calls me to tell me that the lubricant is in and asks if I can bring the car down to have the lubricant applied, I went in on Friday and had this applied, she gave me the bottle as they were unsure on how much to apply and said I can re-apply more if it does not work.
If anyone is interested the part number in G 052 172 A1 so you can let your local dealers know Audi have recommended this, Katherine has asked me to keep her updated on the success or failure of this, I will also keep you informed as well.