If you are having proboems with Safari, corrupted preferences can sometimes prevent Safari from functioning as it should. Try this user tip...
Go to ~/Library/Preferences
Move the com.apple.Safari.plist file from the Preferences folder to the Desktop.
Relaunch Safari. If that helped, move the.plist file to the Trash. If not, move it back to the Preferences folder.
~ (Tilde) character represents the Home folder
For Lion v10.7x: To find the Home folder in OS X Lion, open the Finder, hold the Option key, and choose Go > Library