I just started my X360 up and was signing in when it says update. I've checked major nelson's website (majornelson.com) and it says the update is only to make wireless guitars compatible on the X360. If you read the comment section on major's website you'll see QUOTE Xbox 360 System update "Moments ago, the team released a system update (aka Dash update) to Xbox Live. Over the next few hours, when you sign in to Xbox LIVE, you’ll receive a prompt to accept this mandatory update. What’s in this update? The only thing this minor release will do is prepare your Xbox 360 for the wireless guitars that are being released in a few months. No new features beyond this wireless support are included in this update. As usual, we’ve got some new features planned for later this year as part of our biannual release cycle. Posted: Aug 07 2007, 02:02 AM by Major Nelson | with 11 comment(s) | Filed under: Xbox 360, Xbox Live" QUOTE "diehardjeremy commented: yes and now our box is slower then before the update security update????" QUOTE spaz commented: "actually my disc drive runs quieter/slower since the update ill have to play more to truely tell anyone else notice this?" QUOTE tozOL commented: "mmm nice one..... does not show my game now on the tray display, of what disc is in the xbox anybody else?? August 7, 2007 3:16 AM [Direct Link] MightyHealthy commented: "tozOL: same here. the update has caused the feature to stop working." So it seems once again that they dont tell you everything! M$ has been known to release security builds with updates and not tell a thing. You may be able to still have XBL after this update, but what if this update allows them to detect and Log any mischievous information thats on our console, then when the time is right strike down on people. Hmm?