Has anyone else noticed a change in how LinNeighborhood works in the 11-3-03 release?

I'm running from the CD. I add a host as usual by specifying the host and workgroup names, then querying for an address. No problems at that point, but when I attempt to mount a share I get the error above.

I'm pretty sure my copy of 11-3-03 is okay (passed MD5 and the "testcd" cheat code). Previous 3.3 releases work fine -- any ideas?