Strange network behavior after reboot

[Carl Fink <carlf@panix.com>]

I rebooted my system after noticing that the power supply fan wasn't
turning.  (I have a big fan pointed at the open system right now.)  

After rebooting, I found unfixable errors on a FAT partition, but no
problems with the e2fs ones.  However, now certain functions don't
work correctly.  Notably:

	-innxmit can't connect to innd, although innd is running

	-fetchmail can connect to external POP servers, but after
	 downloading a few bytes, it freezes and eventually times
	 out

	-Local browsers can't connect to my local web proxy 
	 (wwwoffle)

Oddly, although telnet (ssh) to a particular machine works,
connections to that same machine with fetchmail fail.

What could cause this?
-- 
Carl Fink		carlf@dm.net