Yesterday I put my 140 Mh unit into work.
You will want to get firmware v2.0.2 for your miner. It fixes some problems that were in v2.0.1 and should run better for you.
Thanks for your help here, Longsnowsm.
Yes, you need to update the firmware to the newest v2.0.2beta.
Here is the link
http://www.innosilicon.com/html/a4-miner/. See the downloading ceter.