I have an Xbox (the old one) with XBMC installed, and I use it to watch stuff I share on my Windows computer.
Before the WLM 2011 beta, everything used to be working fine. After the beta however, XBMC couldn't access my Windows shares (it requested a password, but I don't use a password).
It turned out that
Windows Live ID Sign-in Assistant was to blame.
If I uninstall it (via the msi in the .cache folder), XBMC can access my shared folders just fine. However, unlike in WLM9 where the assistant was not a vital component, uninstalling the assistant in WLM2011 will totally break it (missing dll; but it won't work even if you replace the DLL, since the assistant installs a service that WLM relies on it (you can't sign in if that service is stopped)).
So, it looks like it's either WLM or XBMC...
Anyone got any suggestions?
I'll try installing the older version of the assistant tomorrow (which I didn't have any problems with it), alongside with WLM2011, but I highly doubt that it will work...
EDIT: Got
in touch with the developers, and they applied a Samba patch which fixed the problem