Martin just told that the problem was fixed *in Moodle* (ie. replaced the problematic part of the code). Turck has not been fixed as far as I know.
Reasons to believe that Turck is somewhat dead:
- No new versions for a year (last version was released by dstogov)
- No replies to questions on SF.net forums about problems
- No replies to questions about status of development on the forums (few people have even promised to contribute money for the project!)
- No CVS activity for 5 months
It seems that there's not really people working on it. Sure Server Logistics can come out with a new PHP package that includes Turck MMCache. The old version. That doesn't mean Turck would still be even actively developed. The source looks quite awful too APC looks much better imho.