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I have windows xp and am told firefox is already running, but not responding and I have to close existing firefox process or restat. neither works, suggestions?

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I have gone to windows manager and deleted the firefox process.

I am able to use explorer and firefox as another user, but not on my primary account.

I have gone to windows manager and deleted the firefox process. I am able to use explorer and firefox as another user, but not on my primary account.

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