Context: you want to add a Hunspell dictionary to memoQ's spellchecker, and you can't download them from ftp.osuosl.org/pub/openoffice/contrib/dictionaries anymore.
It seems indeed that this FTP folder has simply been removed!!
It is not hosted by Kilgray, so we have no direct control over it, and it seems that the new Open Office version (v3) uses a different dictionary format, hence the removal of this folder.
In the meantime, you can manually download your dictionaries here:
and use the Install new dictionary from file option to add them to memoQ.
This is fixed in memoQ 6.2.4 (available soon)