[Bug 668867] Re: Firefox hangs and has becoming very slow. It also crashes Firefox has become virtually unuasble

[axx]

More details…

I started Firefox with "Firefox -console".
This got me a few lines of:
###!!! [Child][RPCChannel] Error: Channel error: cannot send/recv

and one instance of this one:
###!!! [RPCChannel][Child][RPCChannel.cpp:159] Assertion (!ProcessingSyncMessage()) failed.  violation of sync handler invariant (triggered by rpc)
  RPCChannel 'backtrace':

(yes, that's where it ends)

Also, when FF hangs and I'm watching a Youtube (Flash) video, the Flash player stays responsive (for a while) when the rest of FF has already moved to “I'm completely stuck” land.
Even another Flash video player lower on the page kept giving cues it was working (shimmer effect on the “play” arrow when I hovered over it) and the mouse cursor kept on changing from the regular pointer to the hand one gets when hovering over links.

This is Firefox 3.6.12 on Ubuntu 10.10, as the original bug reporter.

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Firefox hangs and has becoming very slow. It also crashes Firefox has become virtually unuasble
https://bugs.launchpad.net/bugs/668867
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