When updating 32-bit Vista machines from to 10.1 via System Update, the ProviderOrder registry key is getting messed up if the Novell Client for Vista is installed. I know this has come up in the past as a problem, but this is very, very specific to an upgrade situation.

[HKLM]\SYSTEM\CurrentControlSet\Control\NetworkProvider\ Order\Provider Order goes from (for example):
"NCFSD,LCredMgr,LanmanWorkstation,RDPNP,webcli ent" to
"NCFSDLCredMger,LanmanWorkstation,RDPNP,webcli ent"

This didn't happen on new installs of or 10.1 that I tested under Vista 32-bit, Windows XP is fine, and it didn't happen on the two 64-bit Vista systems we had in the department to test.

The reason I noticed it was that mapped drives would show up as disconnected, even when you could browse them, and msi-based installs off UNC paths to NCP volumes wouldn't run.

Has anyone else seen this?

Luckily, the 400 or so workstations outside IT that would have this problem are all identical, so I can write over that registry key via ZCM, since it's a known value before and after. For anyone with a more varied deployment, this could be a real headache.