Firefox 3.0 renders pages slowly at 100% CPU and is unresponsive as it does so
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
firefox-3.0 (Ubuntu) |
New
|
Undecided
|
Unassigned |
Bug Description
Binary package hint: firefox-3.0
(This is a new issue for me as of a few days ago. Perhaps something to do with recent updates.)
Comparing FF2 to FF3 on this computer - the only difference is FF2 vs FF3 - I find that FF3 is very unresponsive. Loading a new page causes 100% CPU usage for around a second or so, during which time Firefox is completely unresponsive (I can't even switch to another tab as I wait). This is particularly noticeable when several pages are loaded at once (e.g., when I start Firefox, or when I middleclick several pages that I want to read later) - the 100% CPU/unresponsive time can last for 5 seconds or more.
This appears to occur more obviously with pages with more images, but otherwise, no idea why it is worse in some cases and less in others.
I am using the NVidia binary driver. However, as I mentioned, FF2 is responsive and fast on the same computer, so not sure if this is relevant or not.
Just confirming this and for me its just when FF3 starts. Non-responsive for about 15 seconds
loading 3 tabs. No difference between Ubuntu version and nightly build.
Adblock Plus installed as addon
Mozilla "bug", startup investigation /bugzilla. mozilla. org/show_ bug.cgi? id=406810
https:/