Just for the record, NOAA noticed.

Space Weather Message Code: SUMX01
Serial Number: 77
Issue Time: 2012 Mar 05 0448 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2012 Mar 05 0230 UTC
Maximum Time: 2012 Mar 05 0409 UTC
End Time: 2012 Mar 05 0443 UTC
X-ray Class: X1.1
Optical Class: 2b
Location: N15E54
NOAA Scale: R3 - Strong
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
[link to www.swpc.noaa.gov]