Hi, I own HP iPAQ214 WM, and as we all know, with windows, in time when apps are installed, removed, a lot of stuff remains like in registry and some files are shared with other apps, etc. Same goes for desktop windows. I recently got xperia X8 Android, and was wondering how it goes with Android OS? What happens when we install/uninstall apps? Is there anything left which in time can slow the device? I know something is definitely left, because when the app is installed again, it remembers previous settings, but do these small data's affect the speed? So, how to "clean" the phone, how to maintain it's speed, etc.?

tnx