It seems in mysql-5.0.45-1.fc7.i386.rpm, the binary log does not working anymore.
The following log files in /var/lib/mysql never gets updated after been created during install. p33-bin.index p33-bin.00001 p33-bin.00002
The mysql binary log works well in mysql-5.0.37-2.fc7 which comes wiwth fc7.