hi marcello, i didn't get any error messages when testing the JTablet applet. the message in my console was this...

using java 2! (v1.4+!)
JTablet loaded.

i really have no idea what the problem is :(
but it's ok if you're too busy to look into it cos it doesn't bother me a lot :D

This means there are no errors, and wintab was loaded successfully, and it connected to the tablet. In theory it should work, so I haven't a clue why it wouldn't. I doubt I can do much, but what make and model of tablet do you have?

i am using UC-Logic tablet
i *may* be getting a wacom tablet in march or april :D hope i'll get to try the feature then