On what machine were you running,

Fedora Core 3 running under VMWare on Windows XP SP2. The machine is an AthlonXP 2500 with 756MB of RAM.

how was the memory usage of the module?

It's hard to say. MKDoc is generally a memory-hungry system so it's not easy to say how much Petal contributes to that.

were you able to fine-tune or cache the templates?

I didn't spend the time. In this case a few seconds was acceptable.

The newer HTML::Template::Pro i wanted to trt did not compile on my machine however.

Gee, that's too bad. And I thought it was supposed to be the professional version! ;)

-sam