I am running WAMP server and Windows-7.
This seems to be a Windows-7 specific issue, because this did not happen in either Vista or XP. Whenever I have Firefox already running (such as from a shortcut) and then I try and open the phpMyAdmin link from the taskbar menu, I get a “Firefox is already running” error.
My only solution is to close all of my FireFox windows, (which is a pain since I will only have to re-open them.) and then use the taskbar shortcut.
It seems not to happen if it is the first window I open.
I would love to not have to do this everytime. Is there a registry patch that can split separate FireFox instances into separate processes?