I had, and it bugged the hell out of me when it first started popping up. Theories like conformance to binary-friendly numbers or magic pixel totals don't wash at all. I've never used it.
Another odd resolution: 1366x768 on HDTVs, where the format standards are 1280x720 and 1920x1080. Huh?! Who came up with that? It's very popular, and I can't escape it. My TV/monitor uses it, and I'm looking at 1360x768 right now. That's because VGA resolutions have to be divisible by 8 (not 256 or even 128).
Oh, and 1280x960 is a valid res. I have used that on CRTs.