This morning, slashdot posted a link to this:

http://seclists.org/fulldisclosure/2009/Sep/0039.html

No, this is not a repeat from Windows 95. Well, ok, maybe it is. In any case, the exploit code is in Python. I don't like Python (or Perl), so I rewrote it in C:

http://people.freebsd.org/~wpaul/w00t/smb-bsod.c

Compile with:

% cc -o smb-bsod smb-bsod.c

Run with:

% ./smb-bsod [IP address of machine to clobber]

Supposedly this will clobber Win7, Vista, and possibly Win Server 2008. Have fun, at least until next Patch Tuesday.