I just switched all my projects from Netbeans 6.0 Beta 1 to Beta 2. Some observations:
- The startup is faster. Instead of 40 seconds, it boots in 20 (with several Java EE projects and the UML plugin installed). With the -J-Xverify:none (thank you michael for the hint) setting in etc/netbeans.conf even in 15 seconds.
- The IDE feels a lot faster and more responsive in general.
- All projects, settings (e.g. application servers, subversion) etc. were loaded by Beta 2 without any problems. I just pointed Beta2 to the same directory as Beta 1. For this puspose the netbeans.conf has to be slighlty changed (the entry: "netbeans_default_userdir").