pidgin (was gaim before), now works only if libthread_xu.so is default, 
while with libc_r.so:

 > pidgin -v
Pidgin 2.4.2
 > pidgin -d
[..]
(15:42:36) nat-pmp: Found a default gateway
(15:42:36) nat-pmp: Attempting to retrieve the public ip address for the 
NAT device at: 10.0.0.2
(15:42:36) nat-pmp:     Timeout: 0s 250000us

and it never end to wait.

more log in:

http://rafb.net/p/EVNS9d65.html