Downloaded safari 6.1, after Safari chrashed repeatedly, bookmarks would not respond, just a big mess. I fix it by downloading CleanMyMac and removing all the plug-ins listed under the plug-ins section at the bottom. I did a scan in CleanMyMac, removed all trash. Also, I went into the library in OXS and removed the plug-ins in the "internet plug ins" folder. Safari then worked. What a nightmare.