Eclipse is crashing when clicking on Widgets in the Qt C++ Widget Box

I didn't get any error messages but found the following hs_err_pid15615.log file in my home folder.

Here's the header of that file:

#

1. A fatal error has been detected by the Java Runtime Environment:
   #
2. SIGSEGV (0xb) at pc=0x00007f4c67cf2964, pid=15615, tid=139966547748608
   #
3. JRE version: 6.0_23-b23
4. Java VM: OpenJDK 64-Bit Server VM (20.0-b11 mixed mode linux-amd64 compressed oops)
5. Derivative: IcedTea6 1.11pre
6. Distribution: Ubuntu 11.10, package 6b23~pre11-0ubuntu1.11.10
7. Problematic frame:
8. C [libQtGuiCppIntegration.so.4+0x5f4964] QtCppIntegration::QGtkStyle::drawComplexControl(QtCppIntegration::QStyle::ComplexControl, QtCppIntegration::QStyleOptionComplex const*, QtCppIntegration::QPainter*, QtCppIntegration::QWidget const*) const+0x25f4

I'm sorry if this is a known bug, I wasn't sure how to confirm with the database. I also don't know if this error is java, eclipse or Qt related.

Thanks in advance,
mayonezo