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]

FCC agent quote: "Shhhhhhhh, be vewy vewy quiet. I'm lookin' for XM repeaters. Heh heh heh heh heh heh."
Is this related to the Sirius repeater problems that I have been hearing brief things about? (they have shut down all the philly area repeaters as of october, and there's been no word why).