It's slow. Even with "quickstarter" it's very slow. Starting 10xlonger than the competition (any). Especially annoying when you open e-mail attachments. Yes you can always close the document not the app, expecting it will be needed in a moment, you can leave OOo running in the background all the time. But how happened the rest got it right, just OOO is sluggish? And that's probably the most important software used on Linux.