Extremely bad mousewheel scrolling performance on Mustang
I'm running IntelliJ IDEA on Mustang.
A subset of users (myself included) experience extremely bad mousewheel scrolling performance, but only when running on Java 6. It does not seem to be affected by specific hardware (I've read reports mentioning both ATI and NVidia cards). Neither does the presence/absence of Microsoft IntelliPoint make a difference.
My platform is Windows 2000 running JRE 1.6.0_02, however it seems that the same (or very a similar) problem manifests on Linux.
DirectDraw pipeline is disabled. Without changing any of the other external factors, it's very easy to observe the problem by switching between JRE 1.5 and JRE 1.6.
In some situations, it takes more than 10 seconds (!) of 100% CPU load to consume all the mousewheel scrolling events.
During these periods, one thread from the JVM process has >90% CPU load (reported as 50/50 kernel/used by SysInternals ProcessExplorer).
Native stack of this busy thread looks like:
I've searched the Sun Bug Database without any results. Is this a known problem? What can I do to provide more information?