Computer solutions providers have reported that preorders for the Apple's Mac OS X Leopard have doubled, as compared to the release of the previous OS Tiger. The supposed culprit? Overall dissatisfication of the consumers over Windows Vista.

"More than anything, it has to do with the biggest growth coming from 'switchers' - people switching from the Windows platform," said Chirs Gore, a marketing director for Macforce, an Apple specialist.

The release of Apple Leopard was actually scheduled for last Spring, but was pushed back to this month to make way for the iPhone. Computer suppliers said that the delay didn't affect the expected sales of the Mac OS, however.

Other suppliers reported having a hard time ordering stocks of Leopard, while the rest of the solution providers are excited about the unveiling of Apple's newest OS, with some even giving out computer mice covered in leopard skin-prints.