There is a remote chance that this is related to http://bugzilla.kernel.org/show_bug.cgi?id=12778 . This talks about a DRI regression in 2.6.29rc6, and I know Jaunty's kernel is based on 2.6.28, but I think we pulled in some newer DRM bits from upstream. Also, it never happened for me before jaunty alpha-3 (around that time), in any ubuntu release.
There is a remote chance that this is related to http:// bugzilla. kernel. org/show_ bug.cgi? id=12778 . This talks about a DRI regression in 2.6.29rc6, and I know Jaunty's kernel is based on 2.6.28, but I think we pulled in some newer DRM bits from upstream. Also, it never happened for me before jaunty alpha-3 (around that time), in any ubuntu release.