Q: iMac - Mac OS X Lion 10.7.5 (11G63b) - when in Safari freezes color wheel spins

Hello NWSunshine,

Thanks for using Apple Support Communities.

If an application on your computer becomes unresponsive, in this case it's Safari, you can force the application to quit by following the directions in the article linked to below.

OS X: How to quit an unresponsive application using Force Quit - Apple Support

Take care,

Alex H.