The problem occurs only when using the DFS syntax. Mounting UNC path or samba shares works fine.
A DFS path in our environment is somthing like //ukl-dc02.ad.uniklinik-freiburg.de/group/
whereas an UNC path would be something like //ukl-fscl01grp02/group02$/ i.e. pointing to the actual file server.
As file servers can change and we make extensive use of DFS path, we absolutely depend on this way of mounting.