WinXP and Win7 no issues using IE or FF. Pretty snappy on Droid 3G as well. Could be a local issue. Know there were some issues across the internet today for some of the key "traffic interchange" points.
-source: I do network administration and monitoring professionally.
Have you upgraded to IE9? Quite the improvement overall!
[-[COLOR="DimGray"]Floreat Majestas[/COLOR]-|-[COLOR="Red"]Semper Vigilans[/COLOR]-|-[COLOR="Navy"]Aut Pax Aut Bellum[/COLOR]-|-[I][B]Go mbeannai Dia duit[/B][/I]-]
[COLOR="DarkGreen"][SIZE="2"]"I consider looseness with words no less of a defect than looseness of the bowels."[/SIZE][/COLOR] [B]- John Calvin[/B]
Once I get a connection to the internet, this site loads at its normal rate. But then, I have dial-up at home, with 33.6 Kbps being a good connection. (Work connection, when I have time to surf, is a T1 line )
--------------------------------------- One has no need for a snooze button, when one has a hungry cat.
IE9 is wonderful. From a tech stand point I'm thrilled with its security improvements. If you or your company are reluctant IE8 is not bad either on Win7.
Just a little observation here. But a recent virus put break at my office was confined almost exclusively to FF users. Not implying anything, just thinking while posting...
I find IE9 quirky and random and hate it like poison.
If I have two tabs open and then open a third and select a favourite it will default to first tab and change that, leaving the new tab alone.
When I click on favourites the drop down menu is blank. I have to re-click to close it then re-click again and then they are all there.
I don't think changing the layout left to right is an improvement; IE9 freezes up just as much as IE8 used to do. Maybe the security is vastly improved - I don't know. I have Norton installed and have never had security problems
(Work connection, when I have time to surf, is a T1 line 
)
Bookmarks