Some users are reporting their guitars not working properly after a few hours of use. Does make me think, all that cheap plastic hardware increases the probability of failure substantially. I could see the drums having problems over time with all the potential beating they could receive.

http://community.rockband.com/vbforum/showthread.php?t=8461

Yet another screwup in this gen's game testing? If it keeps going this way pretty soon I won't be able to enumerate them anymore.

Hmmm....I've played around 10-12 hours beat single player on "easy" & almost beat it on "medium"....haven't had any problems with the strum bar yet. Hopefully I don't--I love the game so far--has completely DETHRONED GH3 in my mind.

Here's the problem - these fools are rockin' so hard they disconnect the guitar cable from the USB cable. Happens all the time - and it's a good thing because your 360 would be on the floor if someone tripped over the cable. It is designed so the cable will detach from the 360 and not pull the 360 down.

How do I know? I have two guitars - and both wouldn't work or show up in the game. I was about to e-mail my rep when I said 'Lemme see ...' and rejiggered the connections. Worked like a charm ...

Buried as inaccurate ...

Also seen reports of the USB hubs not working properly? Only 2 of the 4 connections work?

The lesson here is that they shouldn't make fake plastic guitars detachable. The box for rock band is already basically a child sized coffin, it's not like they saved any space by making the guitar like that. As a result people have been complaining about the flimsy plastic it's made out of and the fact the strum bar doesn't seem to work right for some people. Whenever you make something that hundreds of thousands of people will have to put together themselves, there's probably trouble coming in some way.

 http://kotaku.com/gaming/buyer-beware/rock-band-guitar-controllers-failing-325595.php

I seemed to have this very problem when playing a demo unit at Best Buy a couple weeks ago. I strummed normally and I was missing notes, like it was bad timing or hitting two one one stroke. The only way I could play fine was to up strum only.

Yesterday I played a practically brand new RB guitar, and the strum bar felt considerably different to the one in BB - it also worked fine.