Can't delete table ... errors 211/111

Hi, Informix SE 7.10.UC2, 4GL 6.02.UC1 I've got a table that I can't delete anything from anymore. When I do this in dbaccess: delete from timesum_current where 1=1 The errors I get are: 211: Cannot read system catalog (systables). 111: ISAM error: no record found. I've run: check table in dbaccess and both timesum_current and systables come up fine ... I've also run: secheck on every table in that database and they all come up fine. I can't drop the table (from dbaccess), I can't alter it ... I can query it, no problem but I can't update any of the rows or delete any of them. When I try to alter the table using the menu commands in dbacess, I get a slightly different error: ISAM error: duplicate value for a record with a unique key. I've checked the keys, though and don't see any duplicates... Any ideas? Thanks MArc marc@pamco.com