Safari 5.1 opens last website on launching.

[MacmancUK]

Safari
Preferences
Extensions

Remove Safari Restore Extensions did it for me.

 

[scouser75]

This feature annoyed me too.

I found the following solution, you can use it to disable this behaviour for any application you like. If you want to turn it back on again, change the '0' in the command below to a '1'.

Can't remember where I found the hint, but I think it was on macoshints website.

"First you’ll need to know exactly which app you want to kill this feature on -- we’ll use Preview as an example, since it may not be desirable to have it restore documents in most cases. Fire up Terminal again and use the following command without quotes:

“defaults write com.apple.Preview NSQuitAlwaysKeepsWindows -int 0”.

For other applications, simply replace “Preview” with the name of the app -- when in doubt, visit your Preferences folder to confirm how the app name appears in the “com.apple.XXXX” file this is modifying."

Unfortunately this method didn't work for me.

Do I leave the spaces in between the words?

Hopefully I'll move over to Mountain Lion soon and this problem will be resolved!

 

[declandio]

Unfortunately this method didn't work for me.

Do I leave the spaces in between the words?

Copy / paste everything inside the quote marks. Then restart the Finder or reboot...