Before I begin a quick thanks to support for a related problem I had with it recently.
I believe fairly recently there was an update/upgrade for SpamAssassin which resulted in a slight change of interface for users. Around the same time I *think* settings were altered so that SpamAssassin was/is enabled by default, and I think also auto-deletes by default. This does make perfect sense and like most I don't like spam. Unfortunately some genuine emails haven't been getting through (I think have been auto-deleted), and I've noticed with the altered settings it can be hard to tell if auto-delete is switched off, or in some cases turning off SpamAssassin (though submitting a ticket works).
I think it's probably easiest to explain the interface issue with some screen caps. The first is from a 'default' setup, as I've noticed this on two websites which are on two different servers...

...notice how the whole spam section appears to be surrounded in a grey box and the right hand column isn't used, as if the skin is broke. The next screen cap is from a website where the enable/disable button was reinstated...

...I think to most this looks normal enough as the skin is fixed. I noticed though that a small section still appeared to be missing, as the following was taken from a website from work...

...I hasten to add that the red boxes were added by myself afterwards. The second/lower red box is highlighting the missing line which tells users whether auto-delete is enabled and at what level.
I'm all for eUKHost enabling SpamAssassin by default and switching on 'auto-delete' by default if they wish, particularly as most probably wouldn't venture into CPanel to turn it on though it's handy. However I'd prefer it if the CPanel user (eg. myself) still had the option to turn off parts of it (or all) if they wished to.