The icons split when the VRDB is running and once the task is complete or system no longer idle or screen saver it merges again. Personally I have my VRDB generation set to screen saver, but I never use a screen saver, that way it doesn't auto generate which can take longer if it keeps starting and stopping.
I include the VRDB 'Generate Now' into my regular system maintenance I run this every two weeks, rather than the default 21 days, basically because it is easier to do it every other week, it takes mine around 8-9 minutes, this will differ slightly for each system. This means it is done at a time convenient to you, just go and get a coffee.
I feel you are losing a valuable tool by killing the animation of the ' a ' icon as it can provide an early warning of for instance a trojan spambot sending out email spam. The animation of the icon indicates one of the providers is scanning and if you happen to be doing something that wouldn't generate much activity it alerts you to other activity on your system.