Mac User: Why so many Flash updates?

Is there s special reason why there seems to be so many flash updates. I seem to be updating at least weekly on all my machines.

My questions are:

1) Are there really this many recent updates ( I counted seven in on this machine in the past couple of months)?

2) Are there challenges with Mac OS that makes the updates necessary?

3) Or am I experience some sort of local phenomenon unique to my system?

I find all the updates somewhat bothersome. They interrupt my work flow.

Thanks...

Dan Kurtycz