I'm running -current as of Feb 27. I got this panic while running the
3rd iteration of a large project compile on a WinNT machine using the
NetBSD for disk (via Samba 2.0.6). I was actually doing this so that I
could report that my previous problem had disappeared! (the previous
problem was that after upgrading from mid-Dec -current to late Jan, the
SMB *client* (ie the WinNT machine) started crashing during large
builds; that no longer happens).

The offending line is in a diagnostic in sys/kern/subr_pool.c.


   panic: pool_get: mbpl: nmissing inconsistent

   _pool_get(c048fea0,102,c03b3a20,1c6,1) at pool_get+0x58d
   sosend(c08737c0,0,c9b95ed8,0,0) at sosend+0x2fa
   sendit(c9b4b780,8,c9b95f1c,0,c9b95f80) at sendit+0x209
   sys_sendto(c9a4b780,c9b95f88,c9b95f80,0,58) at sys_sendto+0x50
   syscall() at syscall+0x23a
   --- syscall (number 133) ---