What happens if I disable “Enforce checkpoints” in the settings of version 0.6.1?
Nothing much that you would notice. Checkpoints are like a safety net whereby you check your record of the blockchain with a central record. In v0.6 this feature is optional. If you aren’t having issues syncing, you can feel free to turn it off.
Thank you for explaining!
This feature has created a new address in my wallet when a maded a transaction?
No, txns have change addresses sometimes. That has nothing to do with checkpoints.