It's you bloody Yanks that have the odd issue with the -ze, mate
They are almost unused in English, but for some weird reason you colonials decided that, on a seemingly random basis, American English would change it to a -Ze
Drives me crazy, and other than just plain bad typing, it's the one thing that constantly trips me up, writing in American English... Thank God for spell checkers! Makes me seem MUCH smarter than I am (not really a hard task, mind you
)...
Unless you are English, then they make me look like a bloody Yank that can't even use English proper-like