Hello, I've just cleanly installed Mac OS X 10.7.0 and VirtualBox 4.1. I've been creating new Ubuntu virtual machines and have been seeing issues with my kernel_task (pid 0) taking 100% CPU, making the rest of the system unresponsive for periods of time.
I've slowly narrowed this down to a single reproducible case. It seems that whenever the "Unpacking" step is reached in an apt-get install, then kernel_task goes to 100%. I don't know much about virtualization internals but I would suspect that something is wrong with disk I/O reads. Has anyone seen this yet? I can reproduce it consistently, and this doesn't occur in 10.6.0. Best, Mitchell
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