Automounting hidden shares via WG Manager w/ 10.5 clients acting weird

Here's my environment: Xserve that has user home folders and runs an OD. Authentication is done via AD. In Workgroup Manager, the user groups have a "group share point" named Data which is set in the Login Prefs to automount and the "Hide" box is checked. This folder holds data for network apps for our schools (typing programs, accelerated reader, etc). In 10.4, this shows up as /Network/Data for the clients and unless someone is really searching, they'd never know this folder existed... It's just magic! The box to mount with the user's name/password is also checked. We don't want people to actually know this is happening so we don't want it on the desktop. This all works fine in 10.4. When a 10.5 client signs on, they get a box that pops up and asks for their password a second time. The Data share still mounts in /Network... Even before I do anything with the password box that comes up. If I enter the password, then Data mounts on the desktop as well as in /Network. If I hit cancel then it's just in /Network. If I uncheck the "Hide" box for the Data volume in WG Manager, then it does not ask for the password and mounts the volume on the desktop and in /Network. So I don't really know what's making it want to mount on the desktop. It seems to work the same way it did with 10.4 only now it asks for the password a second time to put the share on the desktop which I don't want in the first place. ... I also have one school where they have another three shares mount for the teachers that are supposed to be visible on the desktop. This works fine in 10.4. With 10.5, It still works, but I get four "Connection Failed" errors (instead of the password box) when a user logs in. However, the three shares show up on the desktop and the Data folder is in /Network. Also, users get the Connection Failed error if they go to go->connect to server. If I uncheck "Hide" from that Data folder again then it gives no errors, but the Data folder shows up on the desktop. ... So basically something in 10.5 is making it ask for a password again or throw up an error after it has already mounted the share it's set to mount. Things still work both ways, just with the data folder hidden you get an error or the password box and with the data folder not hidden, then kids can potentially wander in to the folder and cause problems. I hope that makes some sense. If anyone has any suggestions, I'm pretty much at a dead end. Thanks for reading. - JB