/johnny
OO takes far longer to start, but once it's running it's reasonably fast. I haven't compared Linux+OO and Windows+MS Office, but the differences would be irrelevant in practice.
What is very relevant is bugs. OO has too many of them, everywhere. I made a document in OO about 6 months ago, but I couldn't maintain it because it was falling apart at every seam - flow / pagination issues, image anchoring issues, TOC issues... finally I gave up and converted the thing to the .doc format, for MS Office 2003 that I still have.