Firefox is frozen, does not and will not let me close iMac.

A few days ago, I installed Evernote. Who made sure my iMac would never close or go to sleep or restart for Evernote wanted to continue to run all the time. Firefox has now stopped responding. I can't open Firefox, I can close, neither can I stop, restart or log on my iMac. I guess it could be related to Evernote, but I can't find a way to uninstall Evernote. I don't know how to go in Safe Mode on the iMac. Two months ago, I upgraded the software to the Mavericks and have had problems since. Safari is the only browser that works now. I read that I have to uninstall and reinstall Firefox, but do not see how, because I can't open Firefox to get help on the toolbar for Firefox. I don't see the toolbar of Safari. I can not open help and consult the troubleshooting information because I'm not in Firefox, I'm in Safari.

Hello

Looks like you have several programs blocked (not answer). Here are the instructions from Apple to "force them to leave" applications that don't respond - http://support.apple.com/kb/HT3411

If you still can not shut down your computer after you try this, you can press on and press and hold the button for a few seconds and the computer turns off.

It is likely that once you can shut down the computer and then restart it, Evernote and Firefox and other programs will behave normally.

Tags: Firefox

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