Yes I regret it.
I am a Linux/Unix software engineer and I use these OS's in my daily llife. I rarely use Microslop Windblows. So by all accounts I should love this device. But I bought it because I need a smartphone. I have a MacBook Pro so anything I do that requires normal computing work I use that or my ther Ubunto system. The smartphone however should provide itegrated services to my Mac. In particular it should provide a robust fully featured email client that can synch with my Mac for callendar, email, contacts. The n900 provides a somewhat bodged solution that lacks much of the feature I expected in this regard.

But there are lots of other niggly issues with the device that drive me crazy. The fact that I can SSH to my phone is great but it isnt worth the money I paid for it. I will be looking seriously at replacing the n900 with Droid or an iPhone.

In effect I am very dissapointed in the implementation of Maemo for this device. It is way too immature to be released as a working smartphone. It is much less smart than the Blackberry Storm that I gave up for this device (albeit I hated that too).