Snow Leopard System Preferences Must Quit and Reopen

Snow Leopard includes many applications that are now 64-bit. System Preferences is one of them. The catch is that if you have a preference pane in the Other section which hasn't been rewritten/compiled for 64-bit, Snow Leopard informs you that you need to quit System Preferences and reopen it.

One way to avoid this for now is to force System Preferences to run in 32-bit mode by default. Right click and select "Get Info" on Applications/System Preferences. There should be a check box to force 32-bit mode all the time. It looks like all the built-in system preferences support 32-bit mode also so everything should work just fine for now. Staying tuned to see if 64-bit native 3rd party preference panes will work while System Preferences is running in 32-bit mode. Signs point to no.