In English Wikipedia, when I click "edit" I can amend as usual. But when I have finished, if I try any of "Save page", "Show preview" or "Show changes", it immediately throws this:

Wikimedia Foundation
Error

Our servers are currently experiencing a technical problem. This is probably temporary and should be fixed soon. Please try again in a few minutes.

You may be able to get further information in the #wikipedia channel on the Freenode IRC network.

The Wikimedia Foundation is a non-profit organisation which hosts some of the most popular sites on the Internet, including Wikipedia. It has a constant need to purchase new hardware. If you would like to help, please donate.
If you report this error to the Wikimedia System Administrators, please include the details below.
Request: POST http://en.wikipedia.org/w/index.php?title=Talk:Ainmean-%C3%80ite_na_h-Alba&action=submit, from 91.198.174.42 via sq40.wikimedia.org (squid/2.7.STABLE7) to ()
Error: ERR_CANNOT_FORWARD, errno [No Error] at Wed, 20 Apr 2011 15:55:19 GMT

This has been going on for over two hours now.

Version: unspecified
Severity: blocker
OS: Windows XP
Platform: PC