I applied through college or university. The process took 1 day. I interviewed at Walmart (Ann Arbor, MI) in Sep 2012
Interview
Quick interview with NO technical/coding questions despite the internship for software team. Asked very general questions about problem solving, views on planning, etc. One of the most painless interviews I've had although it is worrisome that a company interviewing for a tech position does not ask coding questions. Overall, Walmart is not very prestigious for a CS major at a good school but it seems they are expanding fast and have the right direction.
Interview questions [1]
Question 1
None were "hard" but I guess "what are your interests in technology" since it was so open ended and they actually have a correct answer because they want you to fit their very specific needs.
I applied through other source. The process took 1 day. I interviewed at Walmart (Bentonville, AR) in May 2010
Interview
The people were extremely helpful and prompt in offering the position. After previous internships, I was given the opportunity to come back the following summer.