FF9.0 Noscript2.2.4 delayed cursor keys then hang

[nobody]

Firefox Bug 713254 - scripts hang when multiple cursor/page down keys are queued
User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.6; rv:9.0) Gecko/20100101 Firefox/9.0
Build ID: 20111212185108

Steps to reproduce:

Scripts cause significant slowdown in processing cursor/page down keys
[2-5 seconds delay before the first key is handled, 1+ second for the next keys].
If too many [10+] cursor/page down keys are queued the scripts hang Firefox.
After 30-60 seconds with no cursor/page down key the initial delay is in effect again.

1) Go to http://www.huffingtonpost.com
2) select the top 20 links and "Open in a New Window"
[10 windows with a flash video]
3) select any window and press Page Down or Cursor Down
[nothing happens for several seconds]
4) select another window and press and hold Cursor Down
or rapidly press key 20 times
[Firefox hangs with Beach-ball cursor]

Open Browser windows:
1) Netflix Queue http://movies.netflix.com/Queue?qtype=ED
2) Lycos webmail https://webmail.lycos.com/mail?user=xxxxxx&pass=xxxxxx
3) MotherJones.com http://motherjones.com/mojo/2011/12/dai ... -detention
4) Huffington Post http://www.huffingtonpost.com/politics/
5-25)Huffington Post top 20 article links


Actual results:

Firefox Hangs


Expected results:

Any script that delays processing of Cursor/Page Down keys by more than 5 seconds should be terminated and an alert should be displayed.
If scripts from the same site are terminated 3 times then all scripts from that site should be disabled.

Installed Add-ons:
1) Adblock Plus 2.0.1
2) Adblock Plus Pop-up addon 0.2.9
3) Better Privacy 1.6.7
4) https-Everywhere 2.0development4
5) MAFIAAFire 0.1.2.19.25102011
6) NoScript 2.2.4
7) Disabled: DivX Web Player 2.1.2.145
9) Disabled: FEBE 7.0.2

Installed Plug-ins:
1) DivX Plus Web Player 2.2
2) DivX VOD Helper Plug-in 1.0
3) Flip4Mac Windows Media Plugin 2.3.8.1
4) Google Earth Plug-in 6.1
5) iPhotoPhotocast 7.0
6) Java Plug-in 2 for NPAPI Browsers 13.6.0
7) QuickTime Plug-in 7.6.6
8) RealPlayer Plugin.plugin 0.0.1d1
9) SharePoint Browser Plug-in 14.1.0
10) Shockwave Flash 11.0.1.152
11) Silverlight Plug-in 4.0.60831.0

[therube]

Does this happen in a new, clean Profile, with plugins disabled & only NoScript installed?
(I guess with Flash being kind of ubiquitous, might be OK leaving that enabled.)

> select the top 20 links

Is "20 links" a section of the rag?
Otherwise how are you selecting "20", where are you starting to find these twenty? Snaplinks Plus?

What domains (related to above) do you have Allowed?
Any other NoScript settings that are not at defaults?