Open Office on Ubuntu 11.10 user here. I can confirm it froze frequently and you would lose everything. it was incredibly frustrating

Windows 95 Word was also bad. Some poor non-CS student brought his thesis to our computer pool and worked from Floppy with the only copy he had. Panic mode on when the backup file and original did not fit on that floppy any more and Word asked to swap disks for an empty one. We advised him to just continue swapping, eventually Word will have that backup file on the other disk. It worked after an ennerving amount of floppy swaps...