[Bug 144216] Slow switching tab in firefox/opera when the desktop effects are enabled in Gutsy Gibbon

[Yueyu Lin]

Public bug reported:

The hardware looks like below:
Lenovo Thinkpad T61p, T7500 2.2Ghz, 2GB Ram,160G Sata,1 GB Turbo memory,Nvidia FX570 256M,SUXGA+ 1900x1200
I have to install Gutsy Gibbon to make full use of my laptop.
The Nvidia driver is manually installed 100.14.19 from nvidia's website.
When I enable the desktop effects, everything works fine except the firefox.
It will be OK if only one tab window is opened. When I want to open a new tab, it will lag and stuck there for seconds. When I switch from one tab to another, the same thing happens.
But when I disable the desktop effects, everything works well.
The system is updated to the most up-to-date from the main repository source. It seems a new problem because I didn't find the problem before the update one or two days ago.
Another information is that I am a Chinese user. I'm using Chinese local fonts and strings.

** Affects: firefox (Ubuntu)
     Importance: Undecided
         Status: New

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Slow switching tab in firefox/opera when the desktop effects are enabled in Gutsy Gibbon
https://bugs.launchpad.net/bugs/144216
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