I started running Office 2007 recently, and for the most part I really like it. The new ribbon interface is incredibly intuitive, and the “live” preview of changes is really handy. PowerPoint is the one that impresses me the most thus far – it’s simply amazing what you can do with the new version! You really have to try the new interface to see what I mean, words just don’t do it justice.
I also upgraded from Outlook 2003 to Outlook 2007. If I had to describe Outlook 2007 in one word, it would be slow. I like the interface tweaks, and the instant search is handy, but the application itself is almost unusable. Downloading POP3 email takes at least ten times as long as Outlook 2003 (it is significantly faster using Exchange). Displaying messages takes longer than it used to. Loading the program takes longer. Outlook 2007 is just painfully slow. It’s amazing that this kind of a problem made it past the betas and into the final release.
I haven’t decided what I am going to do yet, but I might have to go back to Outlook 2003 until they release a fix.
UPDATE (3/14/2007): If your Outlook 2007 is slow, try this tip to help speed it up. Worked for me!