I think this post is a bit overdue.
A couple of weeks ago I noticed a new folder in my home folder. It spooked me a bit to begin with (debian-user list). But I soon discovered that the folder only appeared when I was using my internet bank solution (A BEC webbanking solution). I gave their support a call and surely, it was a part of something they called PC-DNA. They agreed with me in that it probably wasn’t the nicest bit of code they had ever produced and told me that they might do it differently in the next update.
So, if you suffer from this, give your bank a call, who knows, if enough of us makes a fuss, they might change it.