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I can't attach files in gmail, firefox V 15.0.1 is not responding. I cleared all history, started in safe mode and toggled the spdy to false, nothing has worked

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I was previously able to attach files to my gmail and today i can't...Firefox V 15.0.1 is not responding when i try to attach a file to gmail. I restarted earlier today and was able to attach a file. I have tried again to attach files and firefox is non-responsive each time. I tried starting firefox with disabling all plugins and that has not helped.

I was previously able to attach files to my gmail and today i can't...Firefox V 15.0.1 is not responding when i try to attach a file to gmail. I restarted earlier today and was able to attach a file. I have tried again to attach files and firefox is non-responsive each time. I tried starting firefox with disabling all plugins and that has not helped.

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please also try setting network.http.spdy.enabled.v2 to false.

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Thanks for your quick reply. I uninstalled the Adobe Reader X, V10.4 plugin and this seems to have corrected the problem. I was going to go back and toggle the network.http.spdy.enabled to true again, unless you think I should just leave it as false