Today was one of those weird episodes for me... I went to a job interview, said hi to people there I didn't know (even joked to the secretary), had a pleasant conversation with the representative, without me being really very nervous, and chatted with an intern when he gave me a lift to the train station...
In short: not a sign of the usual social problems today. Go me.
(Oh, and I can come back in a week for a second interview. A very good sign indeed.)