Msg#: 3722098 posted 3:29 pm on Aug 13, 2008 (gmt 0)
Having discovered that my site has been penalised for a link exchange & linking page which has existed since day one - 3 years ago - I've taken the extreme step of adding a .410 to both the offending pages:
You will likely find others via a site search [webmasterworld.com]
Most likely you will not get a response to your reconsideration request, although it will be read by someone at Google, so choose your wording carefully, and ensure your site will pass a strict manual review. I've never filed a request, so I don't have any first hand experience to pass on, I'm afraid.