After almost a week using Ubuntu, I'm pretty much a happy camper, with the exceptions described in Day 2.

• I still haven't been able to set up my Exchange 2007 account in Evolution, despite several comments here and on Twitter. I managed to receive e-mail using IMAP, but the IMAP setup requires an SMTP server, which my ISP apparently has decided to leave out. I tried Thunderbird as well, but with the same result. I don't know if this is a general problem with the Exchange 2007-platform, and we can always hope the next generation will be better, but for now, while using Webmail works, it is not a great solution.
• The dual screen setup is also still annoying. I got the drivers from NVIDIA installed, and am now using NVIDIA setup. A couple of notes on my setup. I use a Dell laptop, XPS M1330, with two monitors, a Dell W2407 connected via HDMI and an old IBM 17" connected via VGA. I was able to close the lid without all screens going blank, but now, whenever I restart, I have to reset the monitor setup. In other words, Ubuntu does not remember my monitor setup, and spending 5 minutes setting up my monitors every morning is enough to make me grumpy.

Now, everything else seems to be working quite nicely, but these two issues are bugging med to the extent of going back to Windows. And with Windows 7 running like a dream, with Exchange, and remembers my monitor setup, I'm running out of reasons NOT to switch to the Redmond OS.