In FaceTime have you selected the MIc ?
Have you set up the Same Mic in System Preferences > Sound > Input ?
Also in Applications/Utilities open the MIDI Set up item and check the Input format for your Mic.
It should be 41000 or the 480000 setting.
Please, if posting Logs, do not post any Log info after the line "Binary Images for iChat"
iMac 2.5Ghz 5i 2011 (Mountain Lion 10.8.2)
G4/1GhzDual MDD (Leopard 10.5.8)
MacBookPro 2Gb (Snow Leopard 10.6.8)
Mac OS X (10.6.8),
Couple of iPhones and an iPad
"Limit the Logs to the Bits above Binary Images." No, Seriously