Forum OpenACS Development: Re: Issues with big upgrade
We did not adapt the kernel update scripts for pg.9 since this would break upgrades for installations with earlier OpenACS/pg-versions (there are really many old and working installations in the free wild). The easy rule is that with OpenACS 5.8, the support for PostgreSQL 9.* begins.
I can't comment on the the language issue, but you it seems from your comments, that this was a local configuration issue.