Gnome3 and Iceweasel,some apps render garbled,stuck while scrolling/zooming

[deepclutch]

Hi,

using Gnome 3.0.2-5 on Debian testing 64-bit with a nvidia 7300GT card.
I am adjusting to Gnome3 since other options are less as a Gnome2 user.

Now, the Problem with Gnome 3:
many applications particularly eog,shotwell and iceweasel(Firefox) browser has problem rendering images. pages gets garbled and stuck/misaligned when I scroll through web page.

I tried avaialable choices like disabling sync to vblank in nvidia-settings, added

export CLUTTER_VBLANK=none

to ~/.bashrc

this all failed.

Discussed this problem here. http://forums.debian.net/viewtopic.p...8cc7778ef7117d

A Sample of What Happens when I scroll a web page like this forum for eg:


I suspect this has to do with window manager or nvidia driver.
I have upgraded mutter(window manager) to 3.2.x which is the latest available in Debian unstable repository. clutter opengl rendering library is up to date.
Nvidia driver I am using is 290.06(latest).

Is there anyone facing this issue?
I am facing this problem only with Gnome Shell Session. in Gnome Fallback mode and with compiz, Everything is rendered smooth and fine.

TIA+

[deepclutch]

I tried upgrading mutter to 3.2.x version. and it doesn't helped.