[support] Block cache doesn't play nice with my module

On further testing of my new module I've discovered that for anonymous users strange values are being displayed in the generated block. I've determined that this is due to block cache. I turned it off on my production version and it seems to be functioning correctly. I did not have this issue on my development box. As with my earlier problem with css for anonymous users, I would appreciate any thoughts on how I might deal with this. The vast majority of visitors to this site are going to be anonymous. Thanks