I recently interviewed (twice) for an internship position at a tech startup company. After the first interview, which was by Skype, they responded within two hours asking to schedule an in-house interview the next day. The in-house interview was a programming challenge - 2.5 hrs to implement a text-search engine over a large corpus of emails. Needless to say, I didn't do too well on the in-house challenge. However, the my interviewer, the CEO, told me to expect contact within 48 hrs.
What does this quick turnaround on the in-house interview mean?