Things are working pretty okay now. It notifies you if topic or messagetext has changed between the notify and now, if it was moved or not etc.
Just one thing now, my big 6 table combining query does not take deleted posts into account, so I have to run around it on some way. Probably split it up again.
For those who asked me when it's done, well, allmost. I am gonna testdrive this version this weeekend on my own board.