Couple of things to try Tim:
1. Make sure you have the latest display drivers for your video
card --- Chrome increasily uses a lot of advanced features
with respect to direct rendering.
2. Given what you're saying about GMail and Groups:
Try running Chrome with this flag:
--disable-renderer-accessibility
this disables the partially implemented ATK features --- which
has been known to cause performance issues.
Tim Cross writes:
> Well, good and bad news.
>
> I updated to chrome unstable. Now chromevox seems to be working. However, I get MAJOR rendering probolems running chrome unstable on my ubuntu 11.04 system (64 bit). In fact, so bad that chrome
> is essentially unusable. I removed all extensions, including chromevox and the US English TTS stuff just in case something odd was occuring due to an extension, but that had no effect. In the
> end, I had to revert back to google-chrome stable.
>
> Some o0f the issues I noticed included
>
> 1. Pages being incompletely rendered. For example, when viewing a message in gmail, hitting the back button would result in a page that was a mix of both the inbox message list and the text from
> the last viewed message
>
> 2. In web forms, selecting an item from a drop down list would not be displaed in the list after selection
>
> 3. Google groups was nearly impossible to navigate. Seloecting an item from a conversation would display part of it in some sort of mini window on top of the original list from the discussion.
>
> 4. Lots of weird scrolling behaviour. For example, in gmail, I woujld end up with just a few lines of text at the top of the page, the rest of the page would be blank and I could not scroll the
> content down to use the full display.
>
> All of these seem to be javascript issues as they only apper to occur on pages with considerable javascript.
>
> For now, I've uninstalled chromevox and will just have to wait until things settle. A little frustrating, especailly given the US English Female TTS seems to be a real improvement over Lois and
> I'd really like to give it a go.
>
> Tim