Photobucket, Imagetitan and tinypic wont let me upload this one sig of mine that I made.

I have tried changing the format of it to many different options but none work, it just.

Its like its just taking a very long time to load or something cause the loading bar fills up, then at the bottom it continues to say, "sending request to imagetitan.com"...or whatever site I try.

Anyone know what else I can do so that itll actually work???