I'd be really grateful if anyone has any ideas (and hopefully solutions) as to why this is happening. Firefox has suddenly started deleting my cookies whenever I close the browser. I haven't changed any settings as far as I know. I checked the privacy options and "accept cookies" and "keep them until they expire" are both still checked. I've tried going back to a previous restore point but that didn't help and I've checked for spyware etc. using Ad-Aware and Spy Sweeper and while those two programmes got rid of some suspicious content, it didn't solve the problem. I'm using Firefox 3 which I installed not long after it was released so I've been using it quite a while now with no problems. Can anyone help please?