MODE32 users should be absolutely certain to install the new MODE32 version 7.5 from Connectix (see TidBITS-243) before upgrading to System 7.5. We have it on good authority that installing System 7.5 on a non-32-bit-clean Macintosh with an earlier copy of MODE32 (or perhaps Apple's 32-bit Enabler) may cause severe damage to the system software, necessitating a complete reinstallation. Also, MODE32 7.5 is compatible with System 7.1, should you not have upgraded to 7.5 yet. [MHA]
Editing iCal Events in Snow Leopard
Snow Leopard makes looking at event details in iCal easier. In the Leopard version of iCal, you had to double-click an event to reveal only some information in a pop-up box; you then needed to click the Edit button (or press Command-E) to edit an item's information. In Snow Leopard, choose Edit > Show Inspector (or press Command-Option-I) to bring up a floating inspector that provides an editable view of any items selected in your calendar.