User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:184.108.40.206) Gecko/20090824 Firefox/3.5.3 Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.6; en-US; rv:220.127.116.11) Gecko/20090824 Firefox/3.5.3 To my knowledge, this is limited to 3.5.3 and is damn annoying. Just using Firefox for a few minutes will make it start occupying a whole CPU core for itself, keeping it at a constant usage level of 99%. On a dual-core system, this results in 50% of the CPU going off for Firefox. Even if the browser's displaying only one very minimalistic page, CPU's still going through the roof. This seems to be unrelated to RAM or network resources, as both seem to stick to tolerable levels. I'm labeling this as critical because it's just ridiculous that it eats up half the overall CPU power of most Macs out there every single time, causing battery drain, heat issues, loss of productivity, etc. etc. Reproducible: Always Steps to Reproduce: 1. Launch Firefox 3.5.3 2. Wait a few minutes 3. Watch CPU meter Actual Results: CPU usage on one core spikes to 99% even if Firefox is idle Expected Results: CPU usage to remain reasonable and relative to how much work Firefox is handling Theme: Foxdie (Graphite) - http://foxdie.us Extensions: Adblock Plus Better Gmail 2 Download Statusbar Fast Dial Fission Foxdie for Firefox Full Fullscreen Smarterfox
Does this happen with a fresh firefox profile? http://support.mozilla.com/en-US/kb/Managing+profiles?s=profile
Severity: critical → major
Version: unspecified → 3.5 Branch
It appears that the bug is caused by the Foxdie (Graphite) theme and the Foxdie for Firefox extension. Disabling these resulted in CPU usage dropping back to normal.
Status: UNCONFIRMED → RESOLVED
Last Resolved: 9 years ago
Resolution: --- → FIXED
Please report to the developers of those extensions.
Resolution: FIXED → INVALID
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