How naive I was: Back in February I wrote that by extending the deadline for their merger agreement to May 1, XM (NSDQ: XMSR) and Sirius (NSDQ: SIRI) should be giving themselves enough time to get FCC approval. Nope. May 1 is tomorrow and there’s still no word from the agency, so they’re extending again. Interestingly, this time they’re only pushing the deadline back by two weeks, until May 15, so some verdict really should be coming soon. Note that the companies did win DOJ approval back in March. Release.