Hi Gustaf,
I'm running ACS-3.4.9, and for a while I've been getting the nsopenssl errors mentioned above. So I took the task of recompiling AOLserver-3.3.1+ad13 to see if the errors disappeared.
I now believe the errors occur because OpenSSL is not compiled with thread support on the box. The person that originally installed everything on the box didn't compile the AOLserver, he just copied the executables, so he had no way of knowing what was going on.
We have a lot of in house code written for this ACS system and migrating to OpenACS would be HARD work (https://openacs.org/forums/message-view?message_id=250524). I'll probably end up doing this some day.
Before posting to the AOLserver mailing list I'll try running ACS 3 on AOLserver 4. I have not tried this because of the ad13 part in AOLserver-3.3.1+ad13 but who knows, maybe I'll be extremely lucky and get it working =). If you know this just won't work, please let me know.
Thanks!
Pedro