After following the advice of disabling SMB and reneabling, I finally got my Win7 machine to connect to Lion Server. Feeling adventurous I decided to try out the windows 8 eval software on that same Win7 machine. The problem is back, but, I can still connect to my regular iMac without issue. It's running Mavericks. I haven't seen any thing on the thread about window 8, has anybody tried or got it to work?
the reply by techcafe Aug 2, 2011 5:33 AM worked for me. Hella frustratrating, but finally I can connect on my LAN from my XP boxes after upgrading from 10.6 to 10.7. Straight username/password, no servername necessary.