Boinc will not communicate with projects over secure connection

[Matthew Woerly]

Binary package hint: boinc-client

I'm using Intrepid with boinc-client 6.2.12-1. Ever since I upgraded, boinc has refused to connect to projects, giving errors like:

upload temporarily failed, HTTP error

Sending scheduler request: Requested by user. Requesting 259200 seconds of work, reporting 1 completed tasks
Project communication failed: attempting access to reference site
Internet access OK - project servers may be temporarily down.
Scheduler request failed: Peer certificate cannot be authenticated with known CA certificates

I also tried getting the deb from Getdeb and installing it (6.2.14), but I still have this issue.
I even tried the 6.2.18 deb from http://debian.mirror.inra.fr/debian/pool/main/b/boinc/ and it still won't connect.
I mentioned it in a thread here, and someone said they had the same problem, so I opened this bug.
http://ubuntuforums.org/showthread.php?t=951246
In that thread, Kevbert posted a link to this thread
http://www.worldcommunitygrid.org/forums/wcg/viewthread?thread=15682

I looked in the cc_config.xml and there was nothing about the data_dir, and I don't know where that would be in Ubuntu.
I tried downloading a BOINC package from the WCG site, and copying the ca-bundle.crt to the /etc/boinc-client directory, but that didn't seem to fix it.
I think it's related to that ca-bundle.crt, I just don't know where it needs to go. The WCG thread indicates that it only affects projects that require secure connections, which is only WCG at the moment.
I finally fixed it by copying a ca-bundle.crt from the BOINC package download to /var/lib/boinc-client. There was already a version of that file there, but evidently it was too old or something.