iPhone 3GS - Continuous "No Data" Error

My iPhone 3GS on iOS4 keeps getting the following alert; "Could not connect to cellular data network" almost every time I wake my phone up from sleep. I'm guessing it's my Apps but I don't know how to turn off data access for each one. I don't have a data plan and I turned off "Cellular Data" and "3G" in Settings in the hope the alerts would disappear. I made sure no sites are open in Safari but I still keep getting these dumb alerts. It's really annoying because they come up randomly, no matter what I am doing. When I am connected to Wi-Fi the alerts go away.

My iPhone is jailbroken, so does anybody know any JB apps that will get rid of these alerts? It's getting so annoying that I'm seriously considering getting a different phone that doesn't bug me to get a data plan every single time I use it. Any other things I can do to get rid of the alerts? Please help me ):

Thanks in advance! I'll post up a pic when the alert pops up again.

PS: PLEASE don't bother posting if you're just going to tell me to get a data plan. Don't waste my time and yours please. I know that getting a data plan will obviously make the alerts go away but I don't want or need one.

 

Jailbreaking my phone has nothing to do with it. If you don't have anything to contribute, don't even bother posting. Indeed, your display name shows how much you really care unlike other people on this forum who are actually willing to help. If you don't know the answer, then shut up.