[orca-list] More on Orca and Firefox: possible freezing

[Peter Vágner <pvdeejay gmail com>]

Hello,
I am sorry for this message coming at such a late moment. However I have 
finally found sites where I can for sure reproduce orca not responding 
within a little while eventually increasing cpu load to the maximum.
I am running orca master 466afa052512bf4dccd20bf25faa5c50f7ba1a7a with 
Firefox 27 on Arch linux.
The problem is that on some sites where some heavy javascript DOM 
manipulation takes place orca tends to freeze a lot and the only way on 
how to get its responsiveness back is by restarting either orca or firefox.
Without logging in it can for example be seen at http://www.matrix.org/ 
. Just loading this page and trying to move over the links by pressing 
the tab key is enough for noticing the freeze. After up to 30 seconds 
the freeze goes away by it-self and you can continue browsing like 
normal. I know some parts of the site might be resource intensive 
however I expect it not to be causing such a huge orca freezes.
Even more obvious example of what I mean is when trying to logging into 
icloud and trying to manipulate the contacts. Of course icloud.com does 
not have a verry accessible web service but for demoing this orca issue 
it's accessible enough.
0) Make sure you have orca and firefox running
1) Go to https://www.icloud.com/ and login with your Apple ID
2) once the page loads, use tab or shift+tab keys to locate the contacts 
button and activate it. Please note sometimes the contact button can't 
be activated by pressing the enter key so you have to emulate the mouse 
movement and click.
3) Once the contacts part of the icloud app is loaded focus is placed 
into search contacts edit field. Now switch into focus mode, find the 
text All contacts and notice two images on the line following after All 
contacts text.
4) Click the first of these two images. Icloud app will bring up a 
context menu which is not accessible as it should be. However by further 
exploring the page with orca switched into browse mode you will be able 
to find items such as Preferences, Select All, Delete, Print etc...
5) Still with orca switched to browse mode locate the Select all link, 
and emulate mouse move and click that.
6) You will notice orca freezing in to an extend you can no longer 
navigate the page.

I understand this use case is verry rare but this is the first where I 
am able to reproduce it consistently so I can document the steps. As 
find more examples of this I might post them so it's easier to handle.

Greetings

Peter