If the problem is still there, try booting into the Safe Mode using your normal account. Disconnect all peripherals except those needed for the test. Shut down the computer and then power it back up. Immediately after hearing the startup chime, hold down the shift key and continue to hold it until the gray Apple icon and a progress bar appear. The boot up is significantly slower than normal. This will reset some caches, forces a directory check, and disables all startup and login items, among other things. When you reboot normally, the initial reboot may be slower than normal. If the system operates normally, there may be 3rd party applications which are causing a problem. Try deleting/disabling the third party applications after a restart by using the application uninstaller. For each disable/delete, you will need to restart if you don't do them all at once.
Safe Mode
Safe Mode - About
Another thing you can try, but it is probably a long shot is to remove the com.apple.finder.plist.
You need to look in your user Library/Preferences for the .plist. Either hold down the option key while using the Finder “Go To Folder” command and select your user Library in your home folder or use the Finder “Go To Folder” command and enter ~/Library/Preferences/com.apple.finder.plist. Move the .plist to your desktop.
Re-launch Finder by loggin out/in and test. If it works okay, delete the plist from the desktop.
If the same, return the .plist to where you got it from, overwriting the newer ones.
If you prefer to make your User library permanently visible, use the Terminal command found below.
Show User Library
You might want to bookmark the command. I had to use it again after I installed 10.8.5. I have also been informed that if you drag the user library to Finder it will remain visible.