mythfrontend.real crashed with SIGSEGV in glXWaitX()

Binary package hint: mythtv

Crashes during startup since updates a few days ago.

ProblemType: Crash
Architecture: amd64
CrashCounter: 1
DistroRelease: Ubuntu 9.04
ExecutablePath: /usr/bin/mythfrontend.real
Package: mythtv-frontend 0.21.0+fixes19961-0ubuntu8
ProcCmdline: /usr/bin/mythfrontend.real --logfile /var/log/mythtv/mythfrontend.log
ProcEnviron:
 LANG=en_US.UTF-8
 SHELL=/bin/bash
Signal: 11
SourcePackage: mythtv
StacktraceTop:
 ?? ()
 glXWaitX () from /usr/lib/libGL.so.1
 QGLWidget::resizeEvent ()
 QWidget::event () from /usr/lib/libqt-mt.so.3
 QApplication::internalNotify ()
Title: mythfrontend.real crashed with SIGSEGV in glXWaitX()
Uname: Linux 2.6.28-11-generic x86_64
UserGroups: adm admin cdrom dialout lpadmin mythtv plugdev sambashare