I use SP2 and IE (or Firefox) and I cant load certain web pages. Most of the time it works fine but sometimes my browser finds the page but wont load it. It's not a one-time thing, its been like that even before I re-installed to SP2 (I use to have XP). So it cant have anything to do with the availability of the page.
According to ISP my connection has nothing to do with it either.
I use windows internal firewall and the AVG anti-virus program.
If anyone has any idea Id muchly appreciate it.

Are your problems similar with both IE & Firefox?

Are your security settings set to 'medium'?

Are the sites always the same sites or is this a random problem?

I wonder how you can be certain that the web site is not the problem?