what annoys you in the office environment?

for me, i hate when someone keeps calling a coworker that is obviously not at their desk.

i.e.
- phone rings 20 times, before it finally stops (voicemail).
- within 3 seconds the phone starts ringing again, same thing.
- within 3 seconds after that, the worker is paged on the intercom to call ext. whatever.
- within 3 seconds after that, the phone starts ringing AGAIN.

JESUS! they're not at their freakin' desk! LEAVE VOICEMAIL!