Wirelessly posted (Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0) BlackBerry8300/4.2.2 Profile/MIDP-2.0 Configuration/CLDC-1.1 VendorID/102)

It's a known bug in the 8830 software, and has been discussed in several threads here.

You can install the Sprint 8830 software on it and it won't have that "problem" anymore.