I jailbreak my iPhone usually just for few tweaks, biteSMS and couple of themes. In my own experience, every time i do jailbreak i don't get the smooth user experience that i normally would get when the phone is not Jailbreak. WinterBoard keeps crashing, phone is slower, battery indicator is somehow not accurate! Keeps drooping from lets say 80% to 69% without indicating 79%,78%,77% and so ON. But anyway, stuff that i normally would tolerate. But this morning, when i woke up and had a look on my phone i saw this stuff (the blank white squares) that i never installed on my phone!!! My initial reaction was trying to delete them as you would normally do with the Apples way, even though i know it won't work that way. I went to Cydia on manage section to see if i can identify them and remove... but i could not see anything! Where did all this stuff came from? My phone is right now going back to manufactures reset through the iTunes. The only reason i like Apple products is because i don't get this kind of hassle on them. But it appears you do after jailbreaking it. Not sure, it may be just me or maybe i did something wrong. But the only thing i had downloaded from Cydia is SBSettings, BiteSMS, Notifier+ and couple of themes.