One thing that can be annoying is the default behavior of the iPhone status bar. For one, whenever you open the multitasking app switcher, the entire thing gets pushed off the screen. Is there really any good reason for this? Well now you can force the status bar to stay put even when you open the multitasking dock.
The way to accomplish this is a free jailbreak tweak from Cydia called Status Bar Switcher. In order to install this tweak your iPhone must be jailbroken. Once installed there are no settings to configure, just respring and the status bar will stop moving off the screen.
By default, double clicking the home button brings up the multitasking app switcher. You can find Status Bar Switcher in Cydia under Sections -> Tweaks or use the Search function. The tweak is available from the BigBoss repo free of charge thanks to developer CoolStar.