lammert - 7:29 am on Jun 14, 2012 (gmt 0)
If there have been a few hundred visitors, 5 clicks may have been generated. I assumed that with zero traffic, all clicks were generated by you.
Another reason for refusal of a new account is that AdSense doesn't allow two accounts for a single natural person or legal entity. You mentioned that a second account is necessary because of the site use by a different company. In general AdSense will only accept that kind of applications if the second company is a real different company, for example a separate LLC. If there is too much association between a company and a natural person which already has an AdSense account like in a sole proprietorship, the application might be rejected for that reason.
Applying for an AdSense account where you reference a site with existing AdSense code shouldn't be a problem by itself. I have done that in the past, although in that situation that site had traffic of several thousand visitors per day.
Mentioned in a previous post was that you can maintain channels under one account for multiple sites and distribute the payments to owners of websites sharing that AdSense account based on the channel statistics. Although this can be implemented technically without problems, the AdSense ToS has a specific sentence about this in part 11:
The payments made under this Agreement are for use by You only and may not be transferred or in any manner passed on to any third party (i.e., distributed to Properties managed by You that require separate payments) unless expressly authorized in writing by Google (including by electronic mail).