I confirmed with MacWarehouse (two weeks ago) that one can get a 7.1 upgrade kit without any restrictions and then qualify for the 7.5 upgrade. The only problems, which may be fixed by now, were that the floppy version of 7.5 was not in stock and that they didn't have or know about a CD version. A quick comparison showed that this is not a bad deal ($80.90) even compared to the user group special ($64.90), and it may involve a shorter wait.
The deal improves for people wanting to upgrade Now Utilities as well. A new copy of Now Utilities can be had for $29.95 from MacWarehouse with 7.5 (no additional shipping) versus $39.95 plus shipping from Now Software directly.
Smarter Parental Controls
If you've been using the parental controls options in Mac OS X to lock your child out of using a particular computer late at night, but would like to employ a more clever technique to limit Internet access, turn to MAC address filtering on an Apple base station.
To do this, launch AirPort Utility, select your base station, and click Manual Setup. In the Access Control view, choose Time Access to turn on MAC filtering. You'll need to enter the MAC address of the particular computer, which (in 10.5 Leopard and 10.6 Snow Leopard) you can find in the Network System Preferences pane: click AirPort in the adapter list, and click Advanced. The AirPort ID is the MAC address.
Now Utilities and System 7.5 deal
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