Hmm.. I never look at those buttons anyway (they're on the top of the device after all), so using them in the dark or not doesn't make any difference to me. I occasionally press the wrong button, but it's not something I notice as problematic. I can feel them fine.

What's, for me, most problematic with the hardware is that it's so difficult to see the screen in daylight. For the software it's that the email client doesn't use the imap message-already-read flag. If it wasn't for that I would be perfectly fine with the built-in email app.

Other than that.. not much. From a developer point of view it's a bit of a hassle to Hildonize the applications. I'm currently putting things on ice waiting for the updated Hildon in OS2008, but I can't stop feeling that Hildon could have been done in another, more transparent way for the GTK developer.