I hope I didn't poke the hornet's nest too hard
I thought I had read something about VC10 Professional vs. Express. Maybe that was an early 'QueryServ' issue I ran across, but I can't remember off the top of my head...
Irreverent recently posted this:
http://www.eqemulator.org/forums/showthread.php?t=35274
If this can't be traced to a configuration issue, maybe the VC2010/Perl 5.12 minimum isn't quite ready for prime time. (I still haven't seen any issues with my build, but I run a solo server.)
As far as I've been able to find on the net, a compiled perl 5.10.0.1007 was no longer available from any (legal) source back in February. I found a 5.10.1.1008 back then, but that one is no longer available either. I have run across several source code sites, but I'm not sure if the source has been modified locally or not. (Isn't there a Perl source repository somewhere? I found one once, but can't now..and its address was not in the 'activestate' domain.)