ASSERT EXCEPTION DB Error

Has anyone seen this before?

    16:43:24 - 04 Oct
    User: Public User (7)
    Level: MySource Error
    	(/var/mysource_matrix/core/include/assertions.inc:516) - [ASSERT EXCEPTION] DB Error: unknown errorINSERT INTO
    Raw Entry:  sq_cache
    Raw Entry:  (
    Raw Entry:  cache_key,
    Raw Entry:  perm_key,
    Raw Entry:  url,
    Raw Entry:  assetid,
    Raw Entry:  expires,
    Raw Entry:  path
    Raw Entry:  )
    Raw Entry:  VALUES
    Raw Entry:  (
    Raw Entry:  '3d01f6185c61c01b90580b194f1d0a11',
    Raw Entry:  'public',
    Raw Entry:  'http://www.website.com.au/?a=8218&a=8218&a=8218&a=8218&a=8218&a=8218&a=8218&a=8218&a=8218&a=8218&a=8218&a=8218&a...... repeated several hundred times


We've had this the last two days in a row at around the same time in the afternoon on both days. We had over 500 MySource Errors generate yesterday alone in a 20 minute period and it's always the ssame asset which is a remote content asset (ColdFusion Page). When I browse to the asset itself to see if there is a malfunction it is working fine.

Appreciate any advice.

Thanks....John.