Memory usage

I've run into complications here at my site.
My webhotel has started enforcing memory usage constraints (they've always had them, but never enforced them), so now I've had to analyze a bit closer on what uses memory.
I've placed a module on the front page with CB Content, that shows if some fields are missing in the profile with CB Progress.
That alone uses 12 MB of ram, which seems excessive.
CB Content has this:
[cb:if cb_status!=""]<a href="/personlig/din-profil/userdetails.html">[cb:userfield field="cb_status" /]</a>[/cb:if]
Of course the measurement here is absolutely non-scientific, as I only have a total usage, and needs to clean cache and refresh to see a difference before and after reloading a page.
But it clearly indicative of usage.

CB Content alone isn't consuming 12 MB, but all of CB is. It loads in CBs entire API library and all of CBs plugins (as they could have CB fields that would need to be substituted in). 12 MB for all of CB isn't much. The issue is really how much you have installed. The more extension you pile on the more it's going to consume; this is a common problem for Joomla installs as there is no install limitations so it's very easy for it to get out of hand. You shouldn't have any issues with a memory limit of say 64mb. If you're surpassing that then you likely have too much installed or something doing a very heavy query/php operation.