Backup to Google Storage running very slowly Ouch, that makes things complicated. Even our support department would advise you to update if you create a ticket, but that will most likely "break" your installation without clean reinstall. Besides, if you're using the software on Server 2003/Xp, we've stopped support for these systems.
Here's what I propose: if possible, send us diagnostic logs via tools > diagnostic menu and specifically mention that these logs are for Matt and also paste the link to this thread in the issue description. The ticket will then be transferred to me and I'll see if I can help you with your problem.