Microsoft (218)	OSS (186)	Total
Inexperience		53	96	149
	Inexperienced author	14	12	26
	Code author lacks project experience	12	23	35
	Code author lacks programming experience	9	69	78
	Code author lacks Intellect/Knowledge	11	14	25
	Lacks technical skill	22	0	22
Relationship		137	49	186
	Loss of Respect/Admiration	6	10	16
	Negative Perception	61	6	67
	Code author is less trustworthy	38	13	51
	Future contributions will require more time/efforts	49	22	71
Work habits		82	116	198
	unwilling to Learn	4	21	25
	Careless/Lack of attention	47	50	97
	Not concerned about code Quality	9	64	73
	Repeated Mistakes	32	32	64
Other		25	30	55
	Feedback	11	13	24
	Dangerous to project	11	4	15