Problem Quitting SuperDuper

[newarkde]

I back-up two computers to a partitioned LaCie 160 GB Porsche USB 2.0 drive.
When I complete backing up my IMAC G5 (OS10.4.3) I quit SuperDuper (2.0.1) and eject both partitions with no problem.
When I complete backing up my PowerBook G4 (OS 10.3.9) and quit SuperDuper I can eject the unused partition but get the following message when I try to eject the one used for back-up "The Disk "Powerbook_1" is in use and could not be ejected". I can only remove the drive by shutting down the computer.

What do I need to do to properly end my back-up and eject the hard drive?

[dnanian]

Are you perhaps running AntiVirus on the PowerBook?

[newarkde]

Both computers run Norton Anti Virus 10.1.

Both computers are configured similarly, but there are some version differences based on OS X version.

[dnanian]

Right. Please turn off AutoProtect, and that should solve your problem. (The issue is that NAV is scanning the files we've copied, so it won't let you eject the volume.)

[newarkde]

Thanks.

I shut down NAV auto-protect and was able to eject OK after back-up.

Do you know why I don't have the same problem with the IMAC?

SD! is a great product.

[dnanian]

I really can't say why; perhaps fewer files were copied so it took less time for NAV to (pointlessly) scan them?

[DaleMeyn]

I quit using Norton AV for that reason. But being paranoid, I now use Intego Virus Barrier, it is much faster, and doesn't re-scan files already checked. I have recorded SD! copy speeds with and without VB operating, and can find no difference, and none of the problems in other respects I had with Norton.

[dnanian]

We've seen quite a few problems with Virus Barrier, Dale, including a propensity for filling the source drive with lots and lots of temporary files... I'm not sure any of these AntiVirus programs are especially desirable...

[DaleMeyn]

OK, Dave. I'll attend to that warning, and try to keep it manageable. I just don't feel comfy now that the Mac seems to be attracting attention from the virus spreaders. Thanks for the warning. Dale.