I've just finished upgrading the system from 13.04 to 13.10, and now I am facing a problem of weird pulseaudio behavior: the sound goes REALLY choppy, everything is just impossible to be heard. Just some scratchy-weirdy noises. Basically, it looks like the problem is caused by the sound latency on pulse 4.0, cause skype with 30/60ms goes without any problem. The only thing which fixes the problem until some other sound starts playing is to change the sound output and get it back using the sound control in system settings. Also, Flash sound doesn't work whenever you try to trigger it.
If there is a need of posting some logs, please, tell me which ones should be taken and sent here.