Can someone tell me please on how i can duplicate tabs in safari 3? Thank you

Is anybody else having trouble with Safari 3.02b not displaying PDF's? Safari installed just fine, and runs like the screamer that it is. Until I click on a PDF link. Then, I get a grey screen, a swirling pinwheel, and a dialog that says it can't find a compatible PDF reader. I've got Acrobat 8+ Professional, Reader 8, and ShubertIt aboard. I've disabled both the Adobe Reader Plugin and ShubertIt by moving them to a "Disabled Plugins" folder (out of the /Library/Internet Plugins folder), and restarting. I've tried various combinations of those, with no joy.

I know dang well there's a solution for this, and it isn't complicated. Has anybody else run into this problem, and have you solved it?

I figured out my problem was directly related to Speed Download version 3. I removed the application helper for sending downloads to Speed Download from SAfari and it works fine. SD 4 also works fine but I don't have a license for that version yet. I wonder if there is anyone else who had problems with Speed Download 3.
Thanks,
Ryan