WTF? Starting this afternoon, when I visit www.google.ca,
the top menu line is now not-visible. Still there, still clickable,
but not visible.

WTF?

This is with Firefox 3.6.8/Linux.

Changing the user-agent string "fixes it".

Saving the page and viewing it in Konqueror gives the same result.
But visiting www.google.ca using Konqueror does show a normal menu.

WTF????