Failed to mount Windows share

I have a three computer home network, two windows machines, win2000 & xp pro. The third machine is Ubuntu 8.04. Just recently the Unbuntu machine can't connect to the win2000 machine. Ubuntu error "Failed to mount Windows share" pops up. The win2000 machine can connect to the Ubuntu, and the xp machine can connect to the other two, and vise versa. Any ideas?

same problem here, it seems there is something wrong with privileges. i'm not sure yet, ill check it out.

Please try the second link in my sig.