For the record, I have not had any issues with photos on Mayhem, either viewing or posting.
I have Windows XP, IE Explorer 8, and Paint Shop Pro.
I resize the photo to 600 max dimension in Paint Shop Pro, average 40 Kb size image.
I use Photobucket to store them, to save Martin being overloaded in bandwidth and storage space.
In photobucket I Copy the IMG Link.
Then Paste it into the Mayhem Post Reply text box wherever I want