Microsoft is working overtime on a fix to the memory leak bug that is causing some Tablet PC customers' machines to overflow with virtual ink, according to company officials. "It's unclear for now how we'll deliver the fix," acknowledged Frank Gocinski, ISV and business-development manager for Microsoft's mobile platforms division. Microsoft has no imminent plans to deliver a new Tablet PC service pack, he said. But the company might just post the fix, as soon as it is available, to the Tablet Web site for download, he said. There's no ETA yet on the fix, Gocinski said.