Hey, anyone having the same problem as me? Whenever I sync my device, it either sync properly about 25% of the time and rest of the time, it reinstall every single app! It is so frustrating when I sometimes just want a quick sync/add an extra app or two before I leave the house. I tried googling but apparently, searching for 'weird syncs' doesn't help.
Check your applications tab. Maybe a bunch of apps are selected. Note that when you buy an app using iTunes, it will automatically sync the newly purchased app to your device.
I've discovered lately that anytime I download app updates I have to close itunes after, before connecting my device or they don't sync right. It seems Itunes doesn't seem to recognise them properly until it's been restarted. I don't know if that's your problem but it seems apple programmers are useless when it comes to windows or worse they do it on purpose.
I think you guys misunderstood me. I meant that whenever I sync, all the apps that are in my device reinstall themselves all over again. But there will often be errors like eg. 18 apps are not installed because of an error (forgot the exact code). If I remove my device direct, those supposedly not installed apps still remain in my device because they are there in the very first place. Any ideas?