In his blog, Tim Sneath, director of the Windows and Silverlight technical evangelism team, accused Adobe Executive Vice President and CFO Mark Garrett of "living in a fantasy world" if he thinks that Silverlight adoption is waning.

"The idea that Silverlight is in anything other than rude health is more to do with what Adobe would like to be the case, rather than what actually is the case," he wrote in the . "The suggestion that 'Silverlight adoption has fizzled out in the last 6-9 months' is pretty risible, in fact. For starters, Silverlight 2 shipped four months ago, and in just the first month of its availability, we saw over 100 million successful installations just on consumer machines. That doesn’t sound like 'fizzling out' to me."

Sneath was responding to comments Garrett made when answering a question about Silverlight and the competitive landscape at the Thomas Weisel Partners Technology & Telecom Conference 2009 in San Francisco on Tuesday. In his comments, confirmed Thursday by an Adobe representative, Garrett said Silverlight adoption was strong when the technology was right out of the gate but has tapered off in the past six to nine months.

Sneath's reference to Silverlight 2, the second version of the technology, is key to his defense of the technology. Silverlight, which comprises a tool for developing and designing Internet applications and a media player for delivering content, was first introduced in 1.0 version in April 2007. However, it wasn't until the release of Silverlight 2 that the technology was fully baked and became truly viable as an alternative to Adobe Flash.

But Microsoft has lost customers when Silverlight didn't live up to its expectations, even after Silverlight 2 was released. MLB.com, which switched from Flash to Silverlight to stream live baseball games beginning in August 2007 with Silverlight 1.0, said in November -- a month after 2's release -- that they were dumping Silverlight and had signed a two-year deal with Adobe to use Flash again for live streaming.