I put off upgrading to WordPress 2.0 since I use quite a few plug ins, however I heard enough positive reports to give it a try. So far everything seems to work as it should. For anyone else wondering, the plug ins that are work ok so far are:

* Cat 2 Tag 0.9
* Markdown 1.0.1
* Simple Spoiler 1.5
* Weighted Categories 1.2
* Force Word Wrapping 1.0.0
* Gallery2 Integration RC1
* Nice Categories

As well as the theme Wuhan 0.4