Google ( GOOG) just got another black eye. Shares of the Internet search giant tumbled 3% Wednesday after the Mountain View, Calif.-based company disavowed advertising revenue projections it said were accidentally released at its March 2 investors' day. This slip came after media reports indicated that Google also accidently released details of a Web-based storage service . The selloff pushed Google shares down into the $350s, a range they haven't closed at since last month, though the stock has traded at that level intraday a few times in recent weeks. The setback was the latest in a strange 2006 for the once-bulletproof company. In the last six weeks the company has missed earings estimates, spooked investors with talk of slowing growth and now retracted some numbers that were posted on its Web site the day it hosted analysts. "We find this somewhat concerning, as controls seem to be weak," writes Merrill Lynch analyst Lauren Rich Fine, who rates the shares neutral, in a note to clients. "Although this service sounds interesting, given this week's events, one might question how Google can control the privacy of its users' information if they cannot even control their own details of a planned Web-based storage product as well." Even Google bulls were a little concerned about the latest twist. "The company has made three gaffes in the past five weeks that individually and collectively do not result in a material change in our view on growth or valuation of the company," writes Goldman Sachs analyst Anthony Noto in a note to clients. Noto reiterated his outperform rating on the stock but reduced his price target to $490 from $500. He also reduced his earnings estimates for 2006 to $8.87 from $9.01, and for 2007 to $11.85 from $12.05. "That said, we are worried that the company is making mistakes on the 'little things,'" Noto adds.