I updated mysql yesterday on my Request Tracker(RT3.6.0 installed from portage) server, now i'm seeing the message: Transactions not supported by database at /usr/lib/perl5/vendor_perl/5.8.8/i686-linux/DBI.pm line 1657. This seems very similar to a recent debian bug: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=384047
The problem has seemed to fix it's self after an: emerge sync && emerge mysql Class-DBI-mysql DBD-mysql