Solar movement has a usual cycle, with max-out more or less every 11 years. Near this activity max-out, solar flares be able to effect some disruption of satellite communications, even if engineers are learning how to construct electronics that are protected against most solar storms. But there is no extraordinary risk linked with 2012.

The next solar greatest will take place in the 2012-2014 time frames and is forecast to be a typical solar cycle, no diverse than earlier cycles right through history.

Source : NASA