Problems with Triggers

I have recently upgraded from 7.1.3 to 7.2.1 and have been getting some
weird behaviour with triggers.  It seems that the triggers simply do not
get executed all the time.

Did anything change between releases that I may have missed ?
Are there any bugs that I could be tripping over ?

--

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Glen and Rosanne Eustace,
GodZone Internet Services, a division of AGRE Enterprises Ltd.,
P.O. Box 8020, Palmerston North, New Zealand 5301
Ph/Fax: +64 6 357 8168, Mob: +64 21 424 015