About one half of my photo files I send up via ftp get this:

Upload error: The remote server returned an error: (552) Exceeded storage allocation (for current directory or data set).

The others get through. Any ideas? It seems completely random which ones make it through - one will then 2 won't then a couple more will....

Suggestions appreciated!

Yeah...I just tried and got "Disc Full - Please upload later".  It has happened to me before. I think they are understaffed.  It should be fixed in a day or two.