Are you a paid user? Take a look at your "My Account" page. Effective tonight, Angelfire has increased the disk and bandwidth quotas for all paid members.
The webshell "safe mode" bug was tickled by this change and the team is working to fix it. If you use the basic editor, you'd probably noticed that it looks "wrong". The disk space and bandwith work took priority and I am expecting to see a fix for the cosmetic issue sometime next week.
Post here if you see any problems. I hope you enjoy this increase, it's been a long time coming and a lot of work to get to this point.