Agreeing with Hiro, and disagreeing with Ben, I would note that there are two different issues here. The first is what happens when a volume disappears without being unmounted properly--the answer is all sorts of things, the least of which problems is a spinning pizza cursor. The second is what happens when you refer to a volume that is not currently mounted. The Finder deals with this case without causing (undue) problems, PowerMail does not deal with it properly. This is a PowerMail bug--though for all I know it could be due to poor documentation on Apple's part--not an unknown occurrence.
A Ben Kennedy said at Thu, 10 Mar 2005 12:04:17 -0500: >This is a problem with the operating system. I notice this from time to >time as well, in apps other than PM (e.g. just in the Finder); for >example, if a network volume disappears, the entire system will grind to >a halt for upto 5 minutes or so. and A-NO-NE Music said at Thu, 10 Mar 2005 13:52:16 -0500: >It is also a problem with PM, which I have been asking to be changed many >times. Ever since PM5 implemented new indexing, it won't forget file >link if network volume is not present. > >Every time I run rebuild sort indices and/or search index, PM calls many >of my network volumes. It calls my Linux volume at least 5 times. I >have to be there to hit cancel every time.

