437820 - FireFox is having difficulty handling certain aspects of myspace (Strange choppy lag)

Status: RESOLVED DUPLICATE of bug 372039

(Firefox :: General, defect)

Description

[Alex]

User-Agent:       Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0
Build Identifier: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.9) Gecko/2008052906 Firefox/3.0

And no, it's not because users overload their profiles because:

1) When i use the Switch to IE Tab add-on, the page works fine.
2) This lag is present even when doing things completely irrelevant to people's profiles. (ie Tagging Photos, Moving photos, etc. the whole page lags and everything is slowed down)

Reproducible: Always

Steps to Reproduce:
1. Just visit the pages that cause the lag.
Actual Results:  
You get the strange lag. For example, when you try to edit the options of a photo album, the darkening of the background is extremely slow and choppy, scrolling is slow and choppy, and everything lags up UNTIL it's finished darkening. At which point, everything resumes fine.

Expected Results:  
Not lag.

I have heard that some people aren't experiencing these issues, but I don't understand, why would only FireFox act up for me? Especially considering the improvements done to them.

Comment 1

[Nochum Sossonko [:Natch]]

may be a problem with the fixed background, see bug #431993 and all the comments there