"We all know that Steve Jobs is sick. What's not known is how sick he is, and that's worrying investors of Apple (NASDAQ: AAPL) this morning, as well as everyone else. Jobs did have pancreatic cancer a few years ago, but he had a transplant and was able to come back to work. Last time, he gave some kind of time frame for returning to work. This time, he did not. Supposedly the National Enquirer is set to run pictures of Jobs with him looking frail and gaunt. Jobs was spotted leaving the Stanford Cancer Center in Palo Alto, California, according to RadarOnline.com."