The technology market loves a spat between vendors and Apple and RIM have provided one that is more public than most.
Speaking about the future of the tablet on the announcement of its Q4 results the CEO of Apple Steve Jobs said that a 7 inch product would not be a success snuffing out some speculation it might have been lining up a launch of a smaller iPad.
"The 7 inch tables are tweeners, too big to compete with a smartphone and too small to compete with an iPad, The current crop of 7-inch tablets will be D.O.A.: Dead on arrival," said Jobs.
The most obvious target of his comments were RIM, the Blackberry manufacturer, who has announced a 7 inch Playbook tablet for launch next year.
In a blog post the CEO of RIM Jim Balsillie hit back at jobs dismissing the view that the 7 inch format will not be a flyer with users.
"For those of us who live outside of Apple's distortion field, we know that 7" tablets will actually be a big portion of the market," he wrote.
"We think many customers are getting tired of being told what to think by Apple," he added.