A few weeks ago I tweeted about receiving several cold calls from Dun & Bradstreet (NYSE:DNB) over a period of several weeks. The obnoxiousness of the voice mails (“…if you do not get back to us with information about your company it could seriously harm your business” kind of stuff) and the fact that the company had just ended an effort to sell itself got me looking at what was going on. Here are some of the lowlights I found in the financials: As of last quarter DNB had cash assets of about $520 million and cash liabilities -- ...