Help!

Since I moved a couple of days ago, I haven't been able to access any https sites on any browser from my laptop.

I tried clearing my browser histories, I tried uninstalling my anti-virus software, I even tried doing a system restore to before I moved. None of it has worked - I can't access my email, and now I can't login into livejournal either.

I suspect the next step is to call my broadband provider and see what they can do, but I figured I'd see if anyone on my dwircle/flist had any brilliant suggestions in the meantime?