Regarding the unfortunate matter of Mac text-pasting behavior, it's not us, though we wish it was, so we could actually do something about it. There is a known bug with Adobe's Flash Player 10 plugin for Mac browsers, where it loses any manual "hard return" linebreaks from pasted-in text:
There is nothing we can do to fix or workaround that problem in the way it affects our Seller Admin, and we're just as frustrated by this problem as you are. As soon as Adobe fixes this bug in their Flash plugin, linebreaks in pasted text will suddenly start working fine again for Mac users who upgrade their Flash plugin to use the latest bugfixed version. Until then, we can only recommend borrowing a PC to paste-in preformatted text, or just type-in the hard returns manually, which (last we read) ~should~ still work fine, as the bug apparently only affects pasted text.
As for the other issues today, apparently something interrupted database commits-in-progress, so some transactions that were in the middle of being processed by our system at that precise moment failed to complete fully. We were down for a few minutes while we fixed that issue, which also seems to have fixed the puzzling sluggishness issue we were seeing earlier today, so we're keeping a close eye on things for now in case of any further High Weirdness. We've been running data-reconciliation routines to get things back in sync, so any unlogged transactions should show up by later tonight, if not already by now. If any digital-product sales went unfulfilled because of that glitch, you can fulfill those orders manually by using your Seller Admin > "Send free download link/codes". We do sincerely apologize for the inconvenience.