I'm having a major nightmare with video playback on the N900 - as reported by others. I've installed and uninstalled extra codecs and rebooted again and again. Sometimes videos play fine and other times they don't. After playing successfully, the same video will then result in error messages about servers or format; there doesn't seem to be any consistency or rationale. Even the vids that come on the device are occasionally met with these errors or a blank screen. Video was a major reason behind my choosing this baby and I hope there's a solution because this isn't fun. Otherwise the device is fantastic. Thanks for any help.