Need help with DRC errors in EAGLE CAD.

[at89atbits]

I am getting a few DRC errors in eagle CAD
I just want to know if they can be ignored or fixed.

1) Dimension: I have used the 3.5 mm jack kibrary provided by sparkfun
However on Design Rule Check it is showing the dimension error.
Should I make any amends or it is fine to ignore this error?

2) Drill Size: I didn't quite understand what exactly is wrong here.

3) Overlap: Here wire of the same signal is overlapping with the pad and the via.
Is it fine to ignore this error or I need to make amends?

4) Stop mask: I am getting this error in two of the libraries I myself have made.
Is it fine to ignore the error? Or is it necessary to change the layer from tplace to tdocu?

5) Width: The ICs I am using have the pad width of around 8~9mil.
So accordingly I have kept the wire width to 9mil as well.
Also the operating current is in micro amperes.
So is it still necessary to increase the width of the wires?

 

[Mattylad]

Your images don't show the actual error report.

1) Looks like it can be ignored.
2) not sure here either - what is it saying is the error?
3) I would not want a hole through my SMT pads, I'd move it if I was doing this.