I have 2 rather large adapters that convert from the newer style port to standard DVI.
Now, the weight of these seem to be an awful lot on these ports. They seem to both be plugged in at sharp angles (well at least as sharp as the port will allow).
Now I've thought of a few fixes
Get extensions (Mini DVI female to male) to go from the back of the Mac Mini, and then on the floor have the adapter. Downsides to this are more cost, and more length of cable being run.
Use a cable tie through the exhaust vent grill and attach it so the cable is being pulled level as it leaves the port. Downsides are it may block the cooling, and it will not be able to be removed easily.
Is there any other way to solve this problem? I'd hate to break a port, as I'm sure they'd be soldered straight to a PCB.