safari keeps freezing
safari keeps freezing and have to open a new tab and enter web site again as soon as you try to return to previous pages it freezes again help please.
29/06/2015 15:41:07.741 Console[4802]: setPresentationOptions called with NSApplicationPresentationFullScreen when there is no visible fullscreen window; this call will be ignored.
29/06/2015 15:43:05.796 Console[4805]: setPresentationOptions called with NSApplicationPresentationFullScreen when there is no visible fullscreen window; this call will be ignored.
29/06/2015 15:43:15.446 xpcproxy[4809]: assertion failed: 13F1077: xpcproxy + 3438 [D559FC96-E6B1-363A-B850-C7AC9734F210]: 0x2
29/06/2015 15:43:15.560 syncdefaultsd[4808]: *** -[IADomainCache init]: IA domains cache couldn't be read.
29/06/2015 15:43:15.561 syncdefaultsd[4808]: -[IAPluginManager allAListPlugins] [546] -- *** warning: we're on the slow path.
29/06/2015 15:43:15.606 syncdefaultsd[4808]: -[IAPluginManager allAListPlugins] [546] -- *** warning: we're on the slow path.
MacBook Pro, OS X Mavericks (10.9.5)