Vista won't delete folders unless empty (Maxtor Shared Storage)

I have an MSS 200 Gb that works fine with all Windows XP SP2
computers. My new Vista Ultimate PC recognizes, reads, writes, copies,
deletes files in the MSS no problem, except I cannot delete any
folders in the drive unless they are empty first. What gives?

Also, this is a public folder (not password protected--never has been--
even under XP). Reading through Maxtor Knowledgebase, I see that
Maxtor MSS drives don't work properly under Vista if folders are
password protected... so that's not it.

I get the feeling this has to do with permissions somehow... Any help
would be greatly appreciated. /pg.