An Issue of Volume
From the day I eagerly removed the cellophane wrapping around the artful, Google-themed box which contained my Nexus One, I have had only one real gripe with Android: volume management. For a while I just dealt with it - the only way to adjust in-call volume was during a call, and other volume settings had to be controlled via the sound settings menu, or in their proper context.
It was a hassle. Reaching the settings aside, remembering if I had quieted my phone (unless it was silenced) or turned down the alarm volume was up to me, the user.