In theory, the Quick Find bar should not activate when pressing the apostrophe (’) and slash (/) keys when you are in a text-box. However, many users have reported that the Quick Find bar does activate when pressing the apostrophe (’) and slash (/) keys even if they are in a text-box. There is an extension called SearchHotKeys that will disable the apostrophe (’) and slash (/) keys from invoking the quick find bar. You can still invoke via CTRL+F. This should work for Firefox 2 and 3*. Follow these steps below:

1. Go to http://nic-nac-project.de/~kaosmos/index-en.html#searchkeys
2. Right-click and select ‘Save Link As…’ on the link for your version of Firefox (1.5/2.0/3.0)
3. Make a note where you are saving the extension (hint: save to desktop)
4. Open the add-ons manager via Tools, Add-ons
5. Locate the file you downloaded in Step 3 and drag into the Add-ons Manager window to install
6. Restart Firefox
7. Open a new tab and in the address bar type about:config
8. Click I’ll Be Careful, I Promise on the  ‘This Gun Is Loaded’ or ‘Void Your Warranty’ or any other warning
9. In the Filter field type searchkeys.disable.all
10. Double-click on entry to switch value to True

*Note with Firefox 3 you may not need to do steps 7-10 as it seems to automatically disable by default.