WHat happens when you have over 5 running? I mean it plain won't allow it or what? I'm running vista as a virtual machine on my computer with only 768MB allocated, and I can have more than 5 tabs open...
yeah guys i have tried re-installing etc but still it does not want to work correctly. saying that i have just re-installed XP on my laptop so i should have mo probs with FF from now on! thanks for the help guys!