This along with your other Yahoo mail problem highly leans to the idea that you have a mean spirited bit of malware or spyware on your computer.
I've read elsewhere at a2k that some bits of spyware and malware try and prevent the user from accessing Google. In this case it appears that it's crashing your browser when you try to goto the search site.
Do you have any antispyware programs on your computer?
Search and Destroy? Ad-Aware Free Internet Security? Malwarebytes' Anti-Malware?
Hopefully if you can be more specific and give us details on your antivirus software and how often do you update it and run it, maybe someone with an expertise in this kind of problem will be able to help you fix it as well.