[Mobhack]

Sounds to me like the behaviour of a corrupt sound file.

I would first do a disk scan for any lost clusters etc. If that does not fix it then try reinstalling (save off any ongoing save games elsewhere to put back afterwards).

Also - is this a V7 problem, as this is a V7 thread I presume you have had these problems only since the latest patch was applied? If so, you may have had corruption in your downloading of the patch - it happens - so try re-downloading it from the shrapnel page and reapplying it as your first step post the disc scan.

Andy