Is Livemark malware on firefox or a ligitimate add on?

I have just loaded ubuntu o/s in which firefox is embeded as the default search engine bu I can not get it to work as it hangs and times out before connecting with the web. I find in the error consul that Livemark JS finds invalid chanel ,I do not know what Livemark is> It would appear that this is a common problem as 143 people have experienced it.Surely there is a solution.

TylerCasket wrote:
>
> A few weeks ago the sound on anyting flash just doesnt
work. I have windows
> xp, i mainly use firefox, i have tried internet explorer
and its the same
> issue. i just have no idea what to do.
> I have Downloaded the new flash, installed it,
unintalled it, reinstalled it...
> any suggestions?
Tyler,
Please open a support case via
http://www.macromedia.com/support/flashplayer/
Bentley Wolfe
Senior Support Engineer, Flash/Flash Player
*Macromedia, now a division of Adobe Systems

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    PLEASE HELP

    Thanks for the checkmark, but now I must post an addendum thanks to an apparent dumb move by Mozilla today.
    They released Firefox v23 and removed the option to disable JavaScript via Preferences->Content, so...
    I haven't fully tested this yet (since I haven't found any of those infected sites yet), but in order to disable JavaScript in Firefox you must now type "about:config" without the quotes in the address (URL) bar. It will give you a warning about voiding the warrantee, whatever that's supposed to mean, just agree to "be careful".
    Now type "javascript.enabled" without quotes in the search window and double-click the word "true" in the Value column of the first line with that Preference Name, changing it to "false".
    After backing out of the infected page go through the last two steps again changing "false" to "true" to re-enable JavaScript.

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