The Results you see on your account are the Results that are still in the "active" database. We are tryng to keep this database as small as possible to keep it responsive. After a canonical Result was chosen for the Workunit and all sent Results have either returned or passed their deadline, the Workunit and all the Result data can be purged from the database. The purging actually happens by a script that runs about once a day and with low priority. As a rule of thumb I would say Results stay in the DB about a week after credit had been assigned for it.
BM
