Connection to the server was reset while the page was loading

G

Guest

Guest
Hello, I am suddenly getting the above error message on one of two computers sharing a network connection via a router.

The other computer has no problems.

The problem persists when I connect the computer directly to the modem, bypassing the router.

The problem occurs under both Firefox and MSIE, and for all sites.
It also occurs when attempting to access the router's built-in server on its lan side.

Quick Google searches say it must my firewall. It's not. I'm intimately familiar with my firewall setup and have assured myself that this is a dead end.

Malware and virus scans detect nothing.

This was working fine when I went to sleep last night, and broken when I awoke. Rebooting &c hasn't helped.

Firefox in safe mode - no difference.

Ideas?