Just to tack on some info...this was discussed in the other thread at length yesterday and last night.
If anyone has the Browser problem after switching to the $29.99 plan they should call BB tech support @ Cingular and let them know. The tech will change some settings and have you re-register your Host Routing Table and it will be fixed.
Call this #:800-304-3044
Some people are doing live chat to get it fixed also, for that go here:
http://forums.cingular.com/cng/user_...at.id%3Dtschat
Here is the thread:
http://www.blackberryforums.com/show...=37217&page=10