Hi - there are several issues that can cause Firefox to seem "slow". Go through this short list of possibilities, and get back with me: * Frequent "Problem loading page" issues are likely caused by a firewall. See [[Cannot connect after upgrading Firefox]] for instructions on how to check firewalls. Antivirus toolbars are another possibility to check; see [[Troubleshooting extensions and themes]] * Slow when loading Flash/Java: These issues are usually caused by add-ons or by outdated plugins. First, upgrade all outdated plugins by checking [http://www.mozilla.com/plugincheck/]. If it's still slow, see [[Troubleshooting extensions and themes]] * Slow to start up: This is most often caused by an extension delaying Firefox's startup. See [[Troubleshooting extensions and themes]].