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

[DavidG]

This is an emerald bug. Removing emerald (and keeping compiz effects on)
resolves this issue. Reinstalling emerald brings back the slow firefox
behavior. When using emerald, the theme engine plays a role. Themes
using the pixmap engine make firefox very responsive, almost as if
there's no issue. The line engine is also decent. However, using the
vrunner and other engines makes firefox tab switching slow. It's not
just tab switching either.. for example, navigating items in Google
Reader is slow depending on emerald/engine as well.

On Ubuntu 7.10 + all updates (also present when using the 8.04 Hardy
kernel/nvidia drivers)

System:
HP Pavilion dv6700 Notebook
Intel(R) Core(TM)2 Duo CPU     T9300  @ 2.50GHz
3GB RAM
NVIDIA GeForce 8400M GS (256MB)

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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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