I've updated the cabs so that you no longer should receive a popup notification about connecting to the network when sending/receiving a message. I also added a CAB with all stock settings from Sprint, so if you're on Sprint and having issues, you can use that, and if you still have problems, blame Sprint as nothing was changed as far as registry settings go.
Download from here. I am also going to try and set up a threaded version of each cab as well then (minus Stock Sprint)