Good morning! It's been a rough day, with Quizlet experiencing its first major downtime ever. Quizlet is now back and rolling as normal. I believe the problem started around 6 AM, and has just been resolved at 12:45 PM. My sincerest apologies go out to everyone who couldn't use Quizlet this morning.
Some errant multi-gigabyte server log files were running up my disk space and causing the MySQL server to not allow new data and eventually just shut off. The good news is that no data was lost, and everything can just pick up where it left off. This isn't really my area of expertise, so I'm digging in and figuring out why all this happened and how I can prevent it in the future. It's safe for the immediate future.
I arrived at school this morning and several friends informed me that Quizlet was down. I fortunately arrived early enough to run home and start figuring out the problem (contacting my host, Joyent) before school. I got back to school (we're taking those stupid STAR standardized tests all this week) and fortunately I was in a room with plenty of computers so I could monitor the bringing-up progress. Then just a few minutes ago Joyent's support staff came to my rescue and got everything back up. I'm on lunch break now, but I'll be available later today to resolve issues. If you have any problems, please send me a message.