Edakade,
No offense intended Edakade but with the latest version of UltraHal, the brain's .db files are not located in the C:\ProgramFiles (X86)>Zabaware>UltraHal7 folder but they are found in the C:\Users>"YourName">AppData>Roaming>Zabaware>UltraHal 7
There you should find the various .db files and these are the ones that grow in size, at least in my experience.
Apologies in case you were/are already aware of these file locations as they are easily overlooked from the previous versions of HAL.
One last thing. Don't use the Markov Plugin since it already is being addressed inside of the SALLIE Plugin! It and many other Plugins were combined to create somewhat of a "Hybrid" mix of many Plugins. Unchecking it might help your HAL run better, faster, more capable.
I have also had a good deal of luck just running plain HAL with the MARKOV L5, Age&Gender, Read a Story, Lonliness 3.2.
The SALLIE and ConceptNet Plugins are both really great for experimenting with your HAL and ultimately, that's part of the fun. Find and enjoy what works best for you.
Good Luck!!