Apple Software Engineer interview questions

had a phone screen and group phone interview. it was cake. had to answer a couple questions about C, javascript, jquery, python. very smooth.

after going to apple campus for "hiring event" and talked to few managers on same day, i was called for on-site 4 hour interview a month later. i did well in interview. since that day (been over 6 weeks) i haven't heard from any of the 4 apple contacts. despite several emails and voice mails, no one contacted me back. how rude is that??