Firefox issues

Don't kow if this will help anyone but here is what I have experienced with Firefox. The main thing that I noticed was problems sending e-mail (I use Yahoo). When I would start to type in an addressee (autofill) it would hang-up and get a "not responding", which would clear within a minute. In the body I would have trouble typing, (I would type and nothing would show up for awhile).
As far as any web pages, some were slow but I always figured it was on their end (lack of bandwidth, etc). Seven Forums was very slow at times, especially when moving from one subject to another.
Anyway, to make a long story short, I found out today that Norton Internet Security 2009 was finally compatible with Win 7 (had been using the Beta versions). I reinstalled NIS 2009 and so far my email is working better and my web pages seem to be loading faster. I'll see how long that lasts. Expecially since the latest build of NIS 2009 has not yet updated.
Don't know if this is a solution for anyone but maybe another beta software is interferring with Firefox.
Beyond that, I've noticed very few problems.

I'll say what the FF users say to the IE users when it's not working right.

Use IE8 instead, problem solved. :)

I really don't like IE8, try this test The Acid3 Test.
I think it's Norton that's making FF go so slow. I had F-secure and it had almost the same problem. Know I have Eset Smart Security