With default settings in the synatptics driver you can't scroll on Java windows as well as the new Trillian version.

I found the following to solve this problem

edit C:\Programme\Synaptics\SynTP\SynTPEnh.ini and add

[Default]
SF = 0x10000000
SF |= 0x00004000
SF |= 0x00001000


Credit goes to the good people on this thread:
http://groups-beta.google.com/group/de.comp.sys.notebooks/browse_thread/thread/4c477551c8e719f1/a63f1a11235519bd?q=synaptics+scroll+java+swing&rnum=1#a63f1a11235519bd

Kind regards,

Erez