im having trouble with responding on e-mail reply forward dont work
the reply button or forward button do not work on fire fox. my drop down window under my favorites is blocked often showing a highlighted window that is blank inside.
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Try to start Firefox in Safe mode. This mode disables all extensions, user customizations, hardware acceleration, etc. temporarily for diagnostic and troubleshooting. If Firefox works fine in Safe Mode, then this is likely an add-on issue. Restart Firefox in normal mode, then type "About:addons" (without the quotes) in the address bar. Disable your extensions one by one, restarting Firefox between each one, until you find the trouble maker. Once you do, you can disable that add-on and report the issue to that add-on's developer.
A few other basic trouble shooting things you can try is this: Run all Windows Updates, install all needed service packs, etc.
Update your graphics driver (Firefox uses your graphics card for some rendering, and an out of date graphics card driver can cause problems. https://support.mozilla.org/en-US/kb/how-do-i-upgrade-my-graphics-drivers.
Update all your plugins (Flash, Java, etc.): http://www.mozilla.org/plugincheck/.
Download and Install MalwareBytes Anti-Malware, run a full Scan. http://www.malwarebytes.org/. This helps check that there are no viruses on your computer causing issues. You can uninstall this program after you clean off any infections.
Also, you should begin to prepare to upgrade to Firefox 11. Firefox 3.6 will be dropped from support in a few weeks, which means it will no longer be receiving security or stability updates. Firefox 11 is up to 7 times faster than 3.6, has lots of new features and improvements, as well as support for new web standards. http://www.mozilla.org/en-US/firefox/features/ and Updating Firefox have more information.