2002012103 on Win2K SP2. Thinkpad T21 with 850MHz / 384 MB. I'm seeing two different new CPU usage related behaviors on the specified build that seem related. The first is that the browser occasionally pegs the CPU for 3-4 seconds every couple minutes when it does not have the focus. There isn't a specific page that causes this problem that I've been able to deted. The second is that, if left idle, the browser eventually pegs the CPU and must be killed. This is similar to the "eating memory when idle" bug but its CPU this time. Both of these behaviors are new to me in the named build over something 4-5 days older. Sorry that I don't have more specifics on pages, but thought I would report this as the behavior started when I installed this build.
Without specific steps to reproduce there isn't much that can be done with this report.
Please reopen if you can provide specific steps that cause the CPU spike and you can reproduce in a current (0.9.8 or more recent) build. Thanks.