Sorry, this has been fixed in the nightly/svn version. If you don't want to use that you will have to wait for the next official version or just don't use comments.
Our nightly builds are generally quite stable. The zenpage project site for example runs with a nightly as well.
I installed the nightly build for February 28 and now I get a whole list of error messages when I try to post a comment. Here ya are:
Notice: Use of undefined constant r - assumed 'r' in /home/fleep/public_html/dolls/zp-core/plugins/spamfilters/spamassassin.php on line 113
Warning: Cannot modify header information - headers already sent by (output started at /home/fleep/public_html/dolls/zp-core/plugins/spamfilters/spamassassin.php:113) in /home/fleep/public_html/dolls/index.php on line 25
Warning: session_start() [function.session-start]: Cannot send session cache limiter - headers already sent (output started at /home/fleep/public_html/dolls/zp-core/plugins/spamfilters/spamassassin.php:113) in /home/fleep/public_html/dolls/zp-core/admin-functions.php on line 9
Warning: Cannot modify header information - headers already sent by (output started at /home/fleep/public_html/dolls/zp-core/plugins/spamfilters/spamassassin.php:113) in /home/fleep/public_html/dolls/index.php on line 114
Warning: Cannot modify header information - headers already sent by (output started at /home/fleep/public_html/dolls/zp-core/plugins/spamfilters/spamassassin.php:113) in /home/fleep/public_html/dolls/index.php on line 115
Looks like an error in the spamassassin script that shows up when we have strict error reporting set (which is the case for the nightly builds but not the releases.)
line 113 should read:
$this->date=date('r');
That is, the letter r should have been quoted. Fix will be in tonight's build.