suspect proxy setting issue

[Guest]

Since installing and uninstalling a Vista update last week that shut down my
connectivity, I have only been able to access the internet via IE7--and there
only after a long pause to detect proxy settings on startup.

Windows media player, Firefox, Itunes are all unable to connect. Could this
be because they are unable to follow the proxy settings set by IE7?

 

[Guest]

one other piece of info. when I start in safe mode with networking I connect
fine to all programs.

I've tried connecting with windows firewall off and that doesn't help. I'm
not running other firewall software, only symantec antivirus.

I've tried disabling all startup programs and that doesn't fix things either.

 

[Jeffrey Randow]

Work computer or home computer? Are you sure you don't have Norton
Internet Security installed (it is normally bundled with the AV on
computers).