Replication & update statement (no replies)

I have setup master-master replication that works and propagates data to the other server when I issue any valid sql from WorkBench and phpMyAdmin.

My webApp is a different story, the update sql does not propagate, see statement below. When I issue an update via phpMyAdmin the change propagates. Is Backticks the answer? I have a hard time believing this...

phpMyAdmin (works fine): UPDATE `cdmrp0_replic`.`paper_Sessions` SET `oral_timestart` = '2011-08-04 13:02:14' WHERE `paper_Sessions`.`paper_id` = 3864 LIMIT 1

webApp (Not replicated): UPDATE cdmrp0_replic.paper_Sessions SET oral_timestart = now() WHERE paper_Sessions.paper_id = '3864'