Android Apps constantly freezing

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http://androidforums.com – Hey everyone, I'm new to this so bear with me. I have a Samsung Nexus S running Jellybean 4.1.1. I am not sure why but all my apps are now 'hanging' for long periods. I all started when I accidentally clicked on Sync with Windows Media Player but when I looked to delete it, no device was associated with Media Player. I had also done a Facebook update that was so disastrous that I uninstalled it. I know the latest software update was a problem. I have checked all the system settings options and cannot think of where else to look. My storage is; Internal: 806 MB used with 115MB (General)