having some problems with my phone.

1. it can't upload the contacts and favorites to my computer any more. when I syno it it just says looking for changes and starys there. I can look through the phone in explorer but it won't upload the contacts.

2. it random ally closes programs. I was in internet explorer in the phone and went to do something and came back and it closed the explorer. not just that but it does it with other programs.

anyone have any info? I upgraded a few weeks ago to the 1.15 from sprint through the web.