Can't connect through browsers

[tigerpilot]

Need some help.
Acer Aspire One - XP
Wireless strength perfect.  Several programs like anti-virus, google earth etc. update and have perfect access.  However when I try to open Firefox or I.E. I'm in trouble.  Firefox says something like the page was reset while connecting, and I.E says the page cannot be displayed. Same results with computer connected directly into the router. Hopefully I have changed something easy to fix. No errors in device manager and everything else seems O.K.
I certainly appreciate any help.
Regards, Don
Naples FL

[BluerjB]

See if restarting the router help's, i sometimes have the same issue and that helps me...

[tigerpilot]

Thanks to everyone.  I finally did a 'restore' to an earlier date and that did the trick.