Most other reviewers have given pretty positive accounts of the game itself and most people thinking of buying it will know what to expect, so I won't go over it all again in this review.
No one else has mentioned the sensitivity problems relating to the drum kit so maybe it only affects early models, as Activision have suggested. However, if anyone else is having problems when using the drums - either too sensitive or not sensitive enough - then Activision have provided a fix.
If you check out Activisions Customer Support page activision.com/support and follow the Guitar Hero link, you will find out how to download the drum tuning software and obtain a free USB-MIDI interface to connect the drums to your laptop. You can then set the sensitivity for each drum and pedal individually. When contacting Activision you will need to email them the serial number of your kit.
I haven't tried it yet so can't comment on it's effectiveness.
27/11/08. I have now tried the fix and it did not work for the red drum. I am returning the bundle to Amazon for a replacement.
29/11/08. Replacement received from Amazon, new drums are a slightly different design, and work perfectly. Thanks Amazon!