I just installed IBM® Lotus® Symphony™. I don’t have the pokiest PC on the block, but in order to make it run at any speed at all, you’d need to have a bit of grunt in your PC. My VIA SP13000 box takes a couple of minutes just to bring up the main window.
To be fair, OpenOffice isn’t the fastest starter either; none of them have large bits of themselves running in the Windows system code, unlike MS OfficeThey both work, and are free – and Symphony looks a deal prettier than OpenOffice. As there’s no Mac version of Symphony yet, I’m unlikely to switch just yet.