Can't Create Group in Address Book

Hi,

I have had this problem for about 2 years! Bascially I can't create a group in address book. It just stays as "untitled" I have tried all the suggestions including deleting plists, repairing permissions, creating new user accounts and have actually done a fresh install of Snow Leopard so the data from address book is actually just the sync with mobile me, so I guess the data must be corrupted or conflicting with something right? This is the blurb I get in the console when I try to create a group:

22/06/2011 15:43:15 Address Book[28630] -[NSCFString searchMethod]: unrecognized selector sent to instance 0x113886dd0

22/06/2011 15:43:15 Address Book[28630] -[NSCFString searchMethod]: unrecognized selector sent to instance 0x113886dd0

22/06/2011 15:43:33 Address Book[28630] -[NSCFString searchMethod]: unrecognized selector sent to instance 0x11382ecf0

22/06/2011 15:43:33 Address Book[28630] -[NSCFString searchMethod]: unrecognized selector sent to instance 0x11382ecf0

22/06/2011 15:43:41 com.kodak.BonjourAgent[129] PID 129 Thread 0xB0103000 RTC.cpp Line 567 at RTCThread() [81220/21017 ms]: PID 129 Thread 0xB0103000 RTC.cpp Line 567 at RTCThread() [81220/21017 ms]:

22/06/2011 15:43:41 com.kodak.BonjourAgent[129] Starting RTC check...Starting RTC check...

It is similar problem to the discussion here: http://hintsforums.macworld.com/showthread.php?t=110462

Anyway does anyone know how to fix this - would solve alot of frustration!!? I'm running 10.6.7

Thanks,

Kerry