What messaging app are you using?
With my previous EVO's, I always used Handcent SMS instead of the stick messaging app. I loved the flexibility it gave me, and it was nice to be able to filter out all numbers except mobile.
However, I've looked at the comments for Handcent, and it appears they're having some issues with this phone. GO SMS seems to be having similar issues. I know that Handcent is usually pretty quick to fix these sort of issues, but in the meantime is anyone using a third party messaging app that's working for them? Thanks!