freezes and hangs in macbook pro
Is the waiting for cache message showing up in Google Chrome? If that is the case, then yes, that's a pretty common issue with Chrome itself not specific to OS X. I've had that issue a number of times and have yet to find any way to resolve it apart from a full wipe of the application. 

As for the other applications you are talking about, are there some specific applications that freeze, or all apps in general? A screenshot of your Activity Monitor would be ver helpful.