Not sure if you have tried this already as well but completely resetting IE 8 has helped me with similar issues. Internet Options --> Advanced Tab --> Reset
I hadn't noticed the big fat Reset button before. I tried it a few times, but it didn't make any difference. Then I did another Reset and when I was taken to the "welcome to IE" pages, this time I let it continue with all defaults. I still couldn't sign in to Facebook, but I added it to the trusted sites, and now I can log in. So some particular combination of settings after a Reset followed by using trusted sites has solved my problem. The trouble is (as usual) that I'm quite sure what went right. By a process of elimination over the coming weeks I might be able to pinpoint the cause. It's a bit of a worry well into the 21st century when an IT professional with 30 years experience can't login to Facebook. Actually I'm a bit embarrassed to admit that I have a Facebook account, as it's a frightening beast. Did anyone read the article in The Age a couple of days ago about Zuckeberg's comment on "radical transparency"? The author suggests he lead by example and prove to us that Facebook isn't a data mining operation disguised as a social networking site. The bit that shocked me were the comments about the little "I like this" links which are spreading all over the Internet. These seemingly innocuous things are a potential goldmine of information. Greg