suzany - 10:45 am on Jan 9, 2009 (gmt 0)

Not a problem. My husband and I are on the same IP on two computers (home network) and have separate Adsense accounts (and Adwords, and PayPal). It's been this way for years and never a problem. I also sometimes manage his site and biz accounts, and will log in/log out from mine to his.