Because sometimes it takes years for all issues to be cleared...

Because sometimes it takes years for all issues to be cleared out and the suspicions continue from a goodwill point of view. Some of the participants may still be there or in other related areas or industry related groups. Lots of retailers get caught up in similar deliberate accounting errors which pop up years later to the suprise of later investors. Accountants in banks and insurance companies have lots of latitude with assessing bad and doubtful loans, debts and insurance losses. I bring it up because no investor should think accounting is an exact science when deciding what to buy and why.