You must be using T-Mobile. We've had several people report the problem and it appears to us to be an error on T-Mobile's side of things. We haven't been able to find any information about how to correct this issue with T-Mobile and we're still scratching our heads on this one.
Yup, T-Mobile on a T-Mobile Wing phone. Opera loads Fuelly perfectly fine, no issues at all with it, I just can't use mobile IE. I really wish the betas of mobile Firefox for WM would come out or T-Mobile would release WM 6.1 for my phone.