After running for four days, Python program stalled

[John Nagle]

Had a Python program stall, using no time, after running OK for four days.
Python 2.4, Windows.  Here's the location in Python where it's stalled.
Any idea what it's waiting for?

				John Nagle

77FA1428   mov         ecx,dword ptr [ebp-10h]
77FA142B   mov         dword ptr fs:[0],ecx
77FA1432   pop         edi
77FA1433   pop         esi
77FA1434   pop         ebx
77FA1435   leave
77FA1436   ret         10h
77FA1439   cmp         dword ptr [ebp-24h],0
77FA143D   je          77FA1447
77FA143F   push        dword ptr [ebp-24h]
77FA1442   call        77F8B5DF
77FA1447   ret
77FA1448   ret         4
77FA144B   int         3                                # STALLED HERE
77FA144C   ret
77FA144D   int         3
77FA144E   ret
77FA144F   mov         eax,dword ptr [esp+4]
77FA1453   int         3
77FA1454   ret         4
77FA1457   mov         eax,dword ptr [ebp-14h]
77FA145A   mov         eax,dword ptr [eax]
77FA145C   mov         eax,dword ptr [eax]