Does anyone else experience this? See if you can recreate it. I first started noticing it in EV 2007 SP2, but it is also in SP3.
1. Open the properties of a mailbox archive of a user with "Limit Archive Usage" set to "Use Site Settings".
2. Change "Use Site Settings" to enabled and put a figure besides zero in the "Archive size limit" box.
3. Turn on "Approaching the size limit" for notification options.
4. Move the active radio button from "megabytes remaining" to "% used"
5. Look at your "Archive size limit", what happens to it?