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Try clearing the Google search history.
Clearing Just Your Google History:
1. Go to the Safari Menu
2. Select Preferences
3. Select Autofill tab
4. Select the Edit button from the Other Forms Line
5. From the AutoFill list of sites select Google.com
6. Select Remove
7. Select Done
Relaunch Safari. If that doesn't help, From the Safari Menu Bar, click Safari / Empty Cache. When you are done with that...
From the Safari Menu Bar, click Safari / Reset Safari. Select the top 5 buttons and click Reset.
Since you are running Snow Leopard, try running Safari in 32-bit mode, not 64. Right or control click the Safari icon in the Applications folder, then click: Get Info In the Get Info window click the black disclosure triangle next to General so it faces down. Select 32 bit mode. Also, (in that same window) make sure Safari is NOT running in Rosetta.
Relaunch Safari. If the history list is still backwards, go here for trouble shooting 3rd party plugins or input managers which might be causing the problem.
Safari: Add-ons may cause Safari to unexpectedly quit or have performance issues
Web pages now include a small icon or 'favicon' which is visible in the address bar and next to bookmarks. These icons take up disk space and slow Safari down. It is possible to erase the icons from your computer and start fresh. *To delete Safari's icon cache using the Finder, open your user folder, navigate to ~/Library/Safari/ and move this file "webpageIcons.db to the Trash.*
If you still have problems, go to the Safari Menu Bar, click Safari/Preferences. Make note of all the preferences under each tab. Quit Safari. Now go to ~/Library/Preferences and move this file
com.apple.safari.plist to the Desktop. *Relaunch Safari.*
Carolyn 🙂