I'm going to try to fix a couple of issues before releasing PyBlosxom 1.2.1 and contributed plugins pack 1.2.2. The issues are as follows:
w3cdate plugin doesn't expand "w3cdate" variable in head or foot templates (w3cdate variable details)
comments plugin borks in unusual circumstances (comments borks details)
comments plugin requires the email field (comments email field)
I'm working on PyBlosxom Manual changes as well. I think it's good to add a chapter on comments and I need to flesh out the chapter on syndication, too. If anyone wants to help with the PyBlosxom Manual, let me know--I'm happy to pass off some of the writing/collection/verification work to other people.
If you find any problems with PyBlosxom 1.2 or the contributed plugins pack--let me know those issues as well.