Yeah same here, weird... i thought I was unique ._.
I have an iPhone 4, theres a thread I made asking about it on the front page. people say it works well, i would give it a shot. Supposedly it does just what your looking for!
"Extra Speed...Download DiskAid or iPhone Explorer to access into your iPhone ROOT and move into this directory /System/Library/LaunchDaemons/ and delete:
com.apple.search.plist [remove if you don't user Spotlight search]
..."
This is the kind of thing I am looking for! ...but I don't want to read anymore on this subject, my brain is getting tired, ugh. So many jailbreaking options, so much to learn...and I really want something that is bugless or else I can just go back to standard 3.1.3.
I forgot to mention that it also helps to have wifi turned off, seems like it sometimes gets hung up or lags when I am on the road listening to pandora or using google maps and I get a pop-up asking me if I want to connect to the wifi at the building I just passed.