Thanks for the new OO.o 3.0 offering. It's nice for PA to be in sync with the latest version. (I don't write this as a criticism; usually PA is so quick to get new versions out the door that I use it as my "alarm" to update software on my regular computers! I don't know how you do it.)
I'm getting two error messages when trying to launch OpenOffice.org 3.0:
1) "Error loading BASIC of document
[I had to split that line because it wouldn't display completely on the forum preview function]
General input/output error."
2) The second is nearly identical, but the long first line ends in "dialog.xlb/:".
After that, OO.o Writer seems to launch and save files normally.
FWIW, I'm running this from a half-empty 8 GB USB drive on a Windows Vista Home Premium laptop. If you need other information, I'll be happy to provide it.