Hi, Since updating my 2009 imac from 10.9.3 to 10.9.4 i am having a weird wifi problem. Sometimes when waking up from sleep the imac will not automatically connect to my regular wifi but to some random other wifi. If i try to select my regular wifi it will not recognise my password, saying "password incorrect" although it is correct. I can try turning wifi on and off, anything, nothing works. The only way i can get the imac to connect to my regular wifi is to reboot both the imac and the wifi modem. When i do that, the imac recognises it and connects to it fine, without even asking for my password. It does that maybe one out of 5 times when waking up from sleep. This never happened once on 10.9.3 "automatically join this network" and "ask to join other networks" are both selected, it still does it. Any ideas?