I just installed Mint 17.2 and now i want to install the newest Updates .
I have read the documentation.
The german Version of the documentaion , only avalible for 17.0 recommend enabling the update levels 4 and 5 (dangerous updates)
But the english version (for version 17.2) dosent recommend instaling those updates.
So what do you recommend, installing those updates or not?
Keep them off unless there's something specific you need from there.
I would keep them disabled. If you want you can use the option to enable only the security updates of lvl 4 and 5 and not the normal ones. They are rarely unstable and security updates are a bit more significant. Other than that i recommend to keep them disabled.