did i just get hacked!?

ok..i was baaling in all 90 + baal game..and just b4 minions i was teleporting around and killing some guys...it was a full game..then all of a sudden..i check my inventory and my main weapon is gone!?..there goes my perfect hoto (not really too expensive..but what the heck). i was running zpickit...could someone have done something in the game to make me drop my item?..i know that there were 3 other ppl in that game running pickit
ok..so i leave the game..and i re-login to battle.net...when i login..everything look's fucked up!..the chat screen where avatars are at the bottom, are hovering over all of the bottom...and it's stuck like that..until i fully re-start diablo...wtf is going on...did i just get hacked?