Apple's Nvidia Graphics Update 2009 has been pulled offline, and there's no sign of a replacement.
The software was released in late January, and was intended to help resolve various issues on Macs equipped with Nvidia graphics hardware. According to the release notes, the software improved cursor movement when using Apple's Mini DisplayPort to Dual-Link DVI Adapter on the latest MacBook Air, MacBook and MacBook Pro models; it also improved playback of HD video running on systems equipped with Nvidia GeForce 7300 GT or GeForce 9600M GT graphics systems.
The software update was available both through the Software Update system preference and through a download link on Apple's Support Web site. That link now returns a 404 error.
Apple didn't respond to queries before we posted this story. MacUser will update this article when they do.
This story, "MIA: Apple's Nvidia Update" was originally published by Macworld.