Ola,
I wasn't able to reproduce this problem. Make sure your kernel packages (acs-tcl, acs-admin et al) are up-to-date (you are on cvs head, right?). For OpenACS 4-6 and dotlrn 1.0 you may use the
test servers as reference. I am recreating a dotLRN server now off of cvs head on PG to see if there are issues.
Any errors in the log file?