Ubuntu 12.04 hanging very frequently

[Sanjib Sikder]

Hi,

I have been using Ubuntu 12.04 since it was released without any issue but
it is hanging very frequently since the last week. I have observed that
since the last update of my Ubuntu, there was an issue with adobe flash
plug in. A message popped up on every new start of the system that it
failed to install adobe flash. I installed it manually. From then onwards,
whenever firefox (the latest version) is running, Ubuntu freezes completely
if I try to run a few (3 or 4, say) applications simultaneously.  It seems
if I do not run firefox and use Chrome, the system behaves properly.

I would like to use firefox on Ubuntu 12.04. Please help, so that my system
does not freeze.

Thanks

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*Sanjib Sikder
**

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