This is more or less a self-note, but I think it can be useful to others also.
If you have any DELL server running Linux, chances are you installed the Open Manage Server Administrator tool - OMSA in short. This tool traditionally came via the DELL Linux Repository but, from version 8.x onward, it had to be fetched from the new DELL System Update repository.
So far, so good - if you need a recent version of the OMSA tool, simply use the new repository. Problem is that its latest release seems not so well tested on DELL's Gen11 servers (which, by the way, should be fully supported). For example, while the 16.02.00 release (February 2016) worked fine, the latest 16.03.00 update (March 2016) was completely broken on my PowerEdge R615: the dsm service segfaulted on startup, with in turn make the other utilities (eg: omreport and omcontrol) completely useless. Maybe updating hardware firmware will solve that, but a segfault is never a good thing to see.