In Kent County, I turned my renewal application in on May 3, 2011. My license expired on July 12, 2011. I received my renewal in the mail on September 9, 2011. The CPL date listed on the permit was September 1, 2011. Luckily, since I had submitted my renewal application and gotten a receipt at that time, I could continue to carry between July 12 and September 9.
Currently I know an individual who submitted his application for an original to Kent County the first part of September. He has been told, I believe, that it could be January or February until he receives it. When he last spoke with me a few days ago, the county clerk's office said that they hadn't even sent out for the background check.
Kent County is, I believe the worst in the State of Michigan regarding timelines.