Windows 7: Windows 7 Junctions in a network share

Heya all!

I searched for about 3 hours to find somebody having the same problem like i have and another hour to find a place to ask that question, so here i am

I have 2 computers, both using Win 7 home premium 64 bit. One of them is my main working/geming computer, the other is a storage and conversion mule.

On the mule i have just one folder shared over the network. This folder is called "transfer" and is located on a separate SATA hard drive. Now i got some additional hard drives and intended to add them as junctions in that shared folder. Call them "media", "images" and "backup". Here the real weird thing starts: one of the folders works when opened via the network but the others do not. All junctions are made by the same tool and work when used locally on the PC but refuse to work when opened via the network by my other PC. I am clueless why the one junction works exactly as i want and the others do not with the same privileges.

Things i tried so far:
Create junctions to different folders. Does not work when the junction is linked to a folder on one of the "weird" HDD.
Copy privileges as they are on the working HDD. Did that, still not working.
Waste hours of googleing. Yep, its been a boring sunday anyway.

I hope i could describe my problem understanable despite my bad english.