Firefox on my XP and Vista machine, both using the same profile after copying them and keeping it in sync, is extremely slow on startup. It happened in the past anytime my file server at 192.168.100.100 was shutdown or offline in anyway. The solution was to simply turn it back on. Recently this past week I had to change the ip address to 192.168.1.100 and so all the references to the original ip had to be changed. This of course makes fifefox think it's offline and the slow startup behavior reappeared.
I don't have a clue why firefox knows the file server is offline but I know it is causing the slow startup behavior. I originally started disabling and then uninstalling the add-ons I had installed. nothing changed. I then uninstalled the network printers installed (thinking firefox was pinging the network for printers or something), nothing changed. What DID work is creating a new blank profile. So something in the profile is referencing the old file server ip and causing firefox to open the first web page slowly. It does this on popup as well and makes surfing a pain.
I'm looking for a solution to fixing my original profile and not just using the new one.