Short bio: Computer Scientist, FOSS supporter (read more)
Tux Machines (TM)-specific
There's no foolproof way to know the future for Red Hat (NYS: RHT) or any other company. However, certain clues may help you see potential stumbles before they happen -- and before your stock craters as a result.
Sometimes, problems with AR or DSO simply indicate a change in the business (like an acquisition), or lax collections. However, AR that grows more quickly than revenue, or ballooning DSO, can also suggest a desperate company that's trying to boost sales by giving its customers overly generous payment terms. Alternately, it can indicate that the company sprinted to book a load of sales at the end of the quarter, like used-car dealers on the 29th of the month. (Sometimes, companies do both.)
Why might an upstanding firm like Red Hat do this? For the same reason any other company might: to make the numbers. Investors don't like revenue shortfalls, and employees don't like reporting them to their superiors.