In my case, I was hired because I was the only applicant with a particular skill set. There were delays and delays in getting going, mostly due to which faction was running the company on a given day. I was finally given the greenlight and the next day I was told I was on indefinite hold.
I quit a few days later and went off doing contract stuff and liking it. A few months go by and I get a call back. The higher powers have changed their minds. I negotiate my return. The first day went well which was a Friday.
Red flags started popping the next week. I was even told by the head of the section company wide I was designed to fail. In the end, it turns out he was right. I could make a decent short film about the horribly run company and all I would have to do is change names ala Dragnet.
Sounds like my 7 year never ending project. Every few months we would hold a meeting with top exects telling them how wonderful this will be once completed and how everyone would benefit and then put it back in moth balls. Of course it was all cosmetic to keep up the substantial funding. The last time I heard it was still continued and still sitting on a test server thoroughly out of date and usless to anyone.