I closed CS3, removed the wincache xxxx.DAT file, desinstalled all extensions, restarted the computerd, killed all orphaned files, restarted the computer, reinstalled all extensions one by one, testing them, closing CS3 and removing the wincache, and so on.
I have the latest JAVA version, Windows XP Sp3 and Dreamwever last update before they started with CS4.
I spended really a lot of time on this and i have the same problem.
I really do not know what to do right now...
Thank you for your help.