Hey Brrrrbzy
I actually found that the problem had nothing to do with the items I uninstalled as the problem started up again and I would solve it by launching my phone untethered (without jailbreak apps), sending a message and then booting it up tethered again. Since your phone is jailbroken untethered you don't really have the option to do this.
I continued on this way until I deleted a bunch of stuff in cydia and about week later upgraded to 5.0.1 untethered jb.
I have not had the problem since I did the cydia delete so if you want to send me a list of what you have installed I can give you a list of possible culprits based on what you have that I had installed when the problem occurred vs what I have now.
Also, do you have iblacklist or onavo installed?
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