I futzed around with various Mac settings yesterday and discovered at least one which keeps RD5 stable. Turn off all virtual memory, open RD5 and change the prefs to not use system memory and not display disk access (Norton has a similar DiskLight feature which causes problems). Remember that RD5 only needs 24M to run. Cut the minimum and maximum memory requirements to 24 and 25M and as long as you've got that much memory free, RD5 won't even bother trying to create a scratch disk. The probs I've had in the recent past (before and after upgrading from OS 9.0.4 to 9.1) were all related to menus freezing the program -- menu bar menus, dropdown menus, it made no diff; sooner or later a menu would hang the machine. In one case the menu bar was littered with nonexistent menus with gibberish titles. If anyone else here has stories / solutions to share relating to RDS on the Mac I'd like to hear them.