Michael,
make sure that you are on the CVS head. Try doing cvs status on acs-kernel/acs-kernel.info and on dotlrn/dotlrn.info and check that neither of these files are on a branch.
Check your log file for error messages, especially error messages related to the acs-lang package. Feel free to post error messages in this thread.
I did a fresh install of dotlrn cvs head on postgres right now and I don't have any translation missing problems. On which pages do you have these problems?
Thanks!
/Peter