Seventy-three percent of the 2,013 IT decision makers queried by market research firm ChangeWave said their companies currently employ RIM BlackBerry devices. That percentage is unchanged since ChangeWave's last survey, in November, 2007, but RIM's lead over it closest competitor, struggling Treo-maker Palm, grew by a percentage point.

Palm has 18 percent of the market, Motorola has nine percent, Nokia has seven percent, and both Apple and Samsung have five percent, according to ChangeWave. (With the software development kit for the iPhone due this week, which will enable external developers to create business-specific applications, Apple's is sure to see an increase in the number of companies using its smartphones over the coming months and years, analysts say.)

ChangeWave also predicts that RIM's enterprise penetration will continue to increase through second quarter 2008, as 77 percent of respondents said they plan to buy RIM devices for future smartphone deployments. Apple will soon take the second place slot in business smartphone ranking, according to ChangeWave, with 11 percent of respondents saying their companies plan to purchase iPhones. Only eight percent of respondents said they plan to purchase Palm devices.

"What we have here is a huge and still growing market share lead for Research In Motion that for the moment appears near invincible," said ChangeWave Founder Tobin Smith in a release. "However, at the same time, we've picked up an unusual eight-point decline in the percentage of corporate customers who say they are 'Very Satisfied' with their RIM BlackBerry smartphones, which may mean that there's a problem brewing for the Canadian manufacturer."

Though Apple took a small sliver of the business smartphone market pie, its iPhone landed the leading spot in customer satisfaction with nearly 60 percent of respondents saying they are "very satisfied" with their Apple devices. RIM came in second place with 47 percent, which indicates an eight percent drop in user satisfaction since ChangeWave's November, 2007 survey. Nokia took third place with 40 percent, Samsung was fourth with 30 percent, Motorola took fifth place with 25 percent and Palm came in sixth with a mere 10 percent of users saying they were "very satisfied."