What CMS does Plusnet use?

[#1]

I can see that Plusnet use the excellent Small Machines Forum for this board but does anyone know what CMS they use (Joomla, Drupal etc)?
Also is it their own internally developed template or a commercially available one?

[#2]

As far as I'm aware it's not a CMS as such; it's just a custom WordPress configuration, with their own internally developed lick of paint.
P.S. I'll move this to the Community Site forum as it better belongs there.

[#3]

Yep, it's a heavily modded installation of Wordpress.
We use jCMS for our main website.

[#4]

jCMS is custom built.  We used to use something call BigMedium before that though!