If you want Google searches to go back to the modern style, you need to change your User-Agent string. For Safari, enable the Develop Window and use an option in there that works. Internet Explorer 9 (Windows) works, for example.

[crarko adds: I don't have an older system active at the moment to try this. It's inevitable that older software becomes obsolete, the same way older hardware does. I think the actual hint here is a reminder that if a site misbehaves, changing the user agent can be an effective troubleshooting tool.]