Poll: Has the update rendered your xbox 360 to not detect a disc in the tray?

It seems that I'm not the only one who is having this problem since the update, I'm interested to see if it's a large population of people that are having this problem or if it's just a select few.

Edit:

For some (at least one of Team Joystiq included) the update has also had the interesting side effect of turning off your system's ability to sense that there's a disc in the tray, at least until you open and close it. It doesn't appear to be a huge problem, we just didn't want you to panic.

Joystiq

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 guitarsthat 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.

Major Nelson

I turned on my xbox and got the 4 green lights of life....

Seriously, there is nothing wrong with this update.

is it just me, or does it seem pretty dumb to have an update for everyone just for the wireless guitar..

i doubt i'll ever play GH3 (i've not played any other yet) why wouldn't they have it as a game update (or whatever they call it, where it promps you to update only if/when you have that game)