2 years blogging and at this moment I can't do anything with my blog!

[Primal Toad]

I need help fast!

About an hour ago everything began to delete on its own. Any time I add something to my sidebar it gets erased as soon as I click on "save."

When I try to create a menu it will say "pending" when I try to add a page and then it will all erase when I click on "save."

What is the deal?! Can anyone PLEASE help me?!

I have 2 blogs and it is doing this to both: http://primaltoad.com and http://primalsmoothies.com.

Oh, and I can't even upload any themes now. When I try to upload anything I get this error:

Error I receive when I try to upload a theme.

File is empty. Please upload something more substantial. This error could also be caused by uploads being disabled in your php.ini or by post_max_size being defined as smaller than upload_max_filesize in php.ini.

Any help would be fantastically appreciated! Help out a former 2 year blogger who is freaking out!