Given the Question and Answer pair, detect whether the answer is acceptable or not. Denote acceptable answer as "yes", otherwise denote as "no". An acceptable answer is consistent with the context in question, detailed, long, and uses general knowledge of English. Answers that are not definite and suggest a variety of options are not acceptable answers.

[EX Q]: Question: Possible Duplicate: Why don't we use the indefinite article with 'software'? In France I have always been told that saying "a software" is not correct English (as a nominal compound), and that "a piece of software" or "a software program/package/product/system" must be used instead. Recently I have doubts... is there any case where it is actually correct? Examples found on the Internet: SalsaJ, a software for data analysis at school So if you sold a software which required your customer to pay a monthly fee, [...] 
Answer: No, this is always wrong. Both examples you provide contain incorrect usage of the term "software." (A mistake is still a mistake even if many people make it.) However, there might be special cases where you'd see the article preceding software. For example: A software solution would be better for the problem than a hardware one. The indefinite article "a" modifies "solution", not "software", in this case in spite of preceding "software" in this case.
[EX A]: yes

[EX Q]: Question: Is it improper to say "me and Person X"? I always hear it said as "Person X and I", but have personally learned to say "me and Person X". Is there a difference between the two versions and is one of them incorrect? "Person and I" just sounds more formal to me. 
Answer: Yes, placing yourself at the beginning is improper grammar. As far as why, I don't know. It just is. To me, it always sounded self-centered to begin a sentence or list of people with myself. I imagine that is the genesis of the rule but I have no idea. It makes someone sound pretty uneducated to do it, though. "Me and Leon" typically followed by "was..." seems pretty common among those with poor grammar.
[EX A]: no

[EX Q]: Question: There is a concept in computer science which deals with how to demonstrate negative binary numbers. Two methods for achieving this goal are ones' complement and two's complement. Since I got acquainted with these methods, this question never stops coming to my mind that why the apostrophe is placed differently in ones' vs two's? I also saw many articles using one's instead. Even Google suggests that I might be mistaken! So I want to resolve this issue once and for all. Is it a stylistic preference? What causes this difference? And please provide more examples of similar usage. 
Answer: Donald Knuth, that doyen of computer science, says in Art of Computer Programming, Vol 2.: Detail-oriented readers and copy-editors should notice the position of the apostrophe in terms like "two's complement" and "ones' complement": a two's complement number is complemented with respect to a single power of 2, whereas a ones' complement number is complemented with respect to a long sequence of 1s. Indeed, there is also a twos' complement notation, which has radix 3 and complementation with respect to (2...22) (base 3).
[EX A]:
yes