[Satcomer]

Safari crashing is VERY VAGUE! Most Safari crashes can be traced buy checking out /Library/internet Plugins/ or /Users/Library/Internet Plugins/ for older plug-ins. Plus also checking out /Library/Quicktime/ for old QuickTime plug-ins can also have affects on Safari.

Also a p0rn trojan affecting your DNS can cause problems with Safari being slow. So using the DNSChanger Removal Tool to check if been affect can be good too.

So it turns out *Safari crashing is cause by the object between the keyboard and the chair that is most likely the crash reason. One more thing is you can always check what the Mac is telling why something crash (it really is almost screaming at you, but you refuse to listen) by looking at the OS X Logs using Console (/Applications/Utilities/Console) Logs.