Were you trying to upload a picture TC?
If so it looks like you exceeded the size limit.

Even when file sizes are within the stated limits they can still fail down to the usual internet 'issues'.
Really good idea to resize pics first, reducing time/bandwidth required to upload, and therefore the opportunity for errors.

If you have no imaging program to do this, and are on windows XP, Microsoft do an excellent Windows plugin called 'image resizer' that can be downloaded free here:
http://www.microsoft.com/windowsxp/D...powertoys.mspx
Enables a right-click ability to resize pictures after installation.

If you weren't trying to upload a picture...
errrr...

Cheers,
Adam.