throwingweapons.esp - generates 10 errors per minute... which would be easily avoided BTW if the script would not blindly assume its data is always valid.
"Remove" means completely remove everything about a mod (all loose files), then make another log and save. Load that save, and make another log. If any removed mod is still "there", then things will get complicated.
Even if these mods aren't the big issue, it can't hurt the games stability to remove them.
Anyway, generally there's nothing special in the logs. It just shows that people still haven't learned how to use papyrus well. And sadly that they don't bother checking if their mod produces any errors -- they never enable the papyrus log, it seems.
P.S.: Oh.. "Cannot divide by zero" in IMCNqsMain -- classic.



So yes, changing ini values can make Skyrim quite unstable.