Error: Faulting application iw3mp.exe, version 0.0.0.0, time stamp 0x4859a219, faulting module pbcl.dll  
bla bla bla 
It seems that when Firewall is off, error does not occur so often (2 times last night).. But it is very irritating.  
OS Windows XP Pro SP2 
I've read that the reason may be is the sound driver but this is the first time i have such a problem from years. I always used this copy of windows, same drivers and etc. PB updated.