[X2go-dev] plugin is crashing firefox on Ubuntu 10.04 i386

Installation went fine. When trying to connect to the test server the browser (firefox 3.6.6) is crashing with the following error:

firefox-bin: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0. firefox-bin: ../../src/xcb_io.c:249: process_responses: Assertion `(((long) (dpy->last_request_read) - (long) (dpy->request)) <= 0)' failed. Aborted firefox-bin: Fatal IO error 11 (Resource temporarily unavailable) on X server :0.0.

creating a new firefox profile did not work. any other ideas?

Soeren