Just noticed this one.
Isn’t it the affect shadows bug in multisubobj materials?
Possibly … ive been a little absent of late, so i have probably missed the bug reports.
Oh then u should know it will be corrected for the new RC, which will be released…uhmm..soon 
cool .. thanks dude ..
Im suprised you didnt search first 
http://www.chaosgroup.com/forum/phpBB2/viewtopic.php?t=17177
See the known issue.
The problem has been fixed now..
yeah I know i read that 
Just giving you a friendly stir
any ideas on when this can be fixed? Its a pretty major deal at the moment in a couple of my scenes.
It’s fixed, Vlado has mentioned that RC4 should be out soon.
Im sure if you emailed them direct they would send you a fix!..