JohnCenaFan said:
Sometimes it says, "The file upload failed. Please choose a valid file and try again."
And other times it says, "Webpage expired." and stuff like that.
I don't know much of the inner workings of the servers and such but the first message sounds like you are using a file format that doesn't agree with the upload engine. I'd recommend either JPG's, GIF's or PNG files. I personally prefer JPG's.
The second one sounds like it could be communication issues between your computer and the sites server which could just be your internet connection faffing about.
Am I hitting near home @[euantor] ?