Well then, try deleting cookies, temp internet files (cache), history and clear prefetch - then try it - I use this utility that does all that and more called CCleaner (Crap Cleaner) ... works great for me. I use it 3-4 times a day. With a name like Crap Cleaner - it should be right up your alley ...
(Actually, it's my favorite utility)
Note: CCleaner doesn't clean prefetch - but you can without problems: C:*WINDOWS*Prefetch
* put back slash here - this software won't allow a backslash for some damn reason 8O