The site experienced a DNS change that caused it to be out for a few days.
All 3 sites (XiBase, OTC, TSS) combined used up about a gig and a half in the last 12 days, but most of that was from me downloading all the nightly backups. Assuming you have GZIP compression enabled, you usually won't get anywhere near 5 gigs unless you have more than about 200 active members (log in at least once a week) or have a LOT of image activity going on (text is compressed easily and goes down to quite a compact size, but most images are already as compressed as they can be)