We are seeing a vexing problem with our 0.9.840 xwiki:
When logging in, if authentication succeeds, the user gets requested
page, but $context.user is not set - no Hello brian at top, just
"Log-in" and "Register" links. If it fails, normal behavior is seen,
returning to login page.
We have tossed our cookies, cleared the browser cache, and called
XWiki.flushCache() without effect.
Happens with Firefox but not IE. I don't even know where to start
looking, since there doesn't seem to be any browser-specific code in the
path...
brain[sic]