ASSERT FAILED?

I am really concerned about an error message i get while running Informix Online Dynamic Server 6.0.UE1. It appears randomly and the information i could get out of the Administrators Guide is really insufficient to explain me the source of the problem and the severity, possible workarounds and so on. Could someone give me information on that please? Here is the data section: Informix Online Dynamic Server 6.0.UE1 SNI RM 600 SINIX-Y 5.42 A2002 Message: Assert Failed: WARNING! dskflush timeout after 10 minutes Who: Thread(17, main_loop(), a0074e0, 1) Results: Internally corrected Best regards, Roland M'ller