CVS. When updating a checkout from a local, NFS mounted repository, mind your fingers. If you hit a Ctrl+C in an attempt to terminate the process early, cvs will go down in flames and leave a cute cvs.core file behind.
Now this has annoyed us at pointyhat for too long! First lad to get me a patch fixing this issue will get $4 from my Paypal account. And a chocolate badge on top of that, if collected in person at my place.
Meanwhile, ehaupt boldly went to face the xmms avalanche mentioned yesterday. Thanks!