XM Satellite Radio revealed in a recent SEC filing that they have held discussions with the FCC in regards to their terrestrial repeater network.

The FCC is concerned that the characteristics of some repeaters are different from the data that was originally submitted by XM. XM is currently seeking approval to continue running the network. However the final result may end up in XM paying a penalty or making "adverse changes" to its network of repeaters, or transmission towers.

If you'd like to learn a lot more details on XM's repeater troubles, Satellite Radio TechWorld has an incredible writeup explaining it all. 

[via FMQB]