"I uninstalled and now I can't even reinstall with my user/password...
I can't even submit ticket..
All sites are loading but the support.html is just a blank page for me."
It looks so far like this is just an issue related to a software upgrade / optimization / fill-in-the-customer-service-euphemism. I think the changes might be more optimizations, balancing reducing disk accesses with reducing memory usage, etc. -- other things that users normally won't see. There may be more than one server that has to be updated or maintained related to the software upgrade, and I think that might be causing this brief service outage. If you got an upgrade in the last 12 hours or so and find your software isn't working, just submit a ticket when you can (and if you can't right now try again in an hour or so), and try to install (or restart, if you haven't uninstalled) the software a little later.
On another note, if anyone has a link to the update log and can post it (or describe how to get there, if you can't post links yet) I'd appreciate it.