It is possible you were always being reported, but never knew.
The latest patch made some changes to the reporting system to provide more feedback to the people reporting, as well as those who get reported. It provides a warning that reports are coming in against you. Helpful for someone mouthing off in Trade, frustrating for you if you are actually playing the BG as intended.
There should be no action taken against you though if the logs show you were participating. Even if there is an accidental issue, you can appeal.
You can read more about the system changes in this Blue post on the CS forum. It discusses bringing back the frequency of the suspension penalty in addition to the Silence penalty. It has a link to the relevant section of the patch notes for reporting changes.