Last week in the cold I couldn't unwind either of the front windows as they were frozen, that was to be expected.

Yesterday I still couldn't get the driver window down, the passenger one is fine, but the driver's side goes just a fraction and seems to be stuck.

It's not frozen over or anything like that.

Anyone experienced this?

Both of mine had the same problem, but once it warmed up they are working normal again. Is it still cold in your part of the country? There may be some ice stuck between the glass and rubber bit on the doors. If not, take it down to the dealer and let them take a look

might be a bit of ice still left inside the door?

Take the fuse out and replace it and it should start working

normally. Happened to my wifes car last week. Fuses are behind the glove box. It's one of the large square fuses at the bottom.

I had this for a couple of days last week. Had to keep getting out the car to get a ticket when I got to the car park :) But it's back to normal since it's warmed up, quite annoying though!