Thanks for the advice, guys.
And New Age Outlaw, I did the %username% profile change, and that looks like it took effect properly.
Here's the network path to the share, just in case anyone will be able to notice anything I may need to do.
I was able to figure out the difference between the manditory profiles and regular roaming, too. I don't need manditory profiles. However, I will look into Disk Quotas. As a matter of fact, I may have already done it in Group Policy; isn't that where it's located?
Just checked it: UserConfiguration/AdministrativeTemplates/System/UserProfiles
Enable "Limit Profile Size" and I limited to 6000kb.
*\'Failure\' is not a four-letter word.