Oncheck - error

Informix On line DSA V 7.10 RM 600 (OS Sinix 5.42) we got unpleasant error message while running oncheck -cI ... Index xpkp01_poERROR:Rowid mismatch between data row and btree item Rowid 0x9a005 contains key value: Key: "11 ":1:2: Btree item contains rowid 0xc2b01, key value: Key: "11 ":1:3: Index xif380p11_zaisteni ERROR:Rowid mismatch between data row and btree item Rowid 0x9b0d contains key value: Key: "11 ":"bol ": Btree item contains rowid 0x9b0e, key value: Key: "11 ":"bol ": Index xif506p11_zaisteni ... indexes were unrepairable so we have decided to recreate the whole database (using : unload,drop,create,load ....) System was runing without any problems for a week and today it has appeared again on different indexes. We do not use fragmented or detached indexes . I would appreciate any hints or ideas katarina PS: I have heard that 7.10 release is full of index bugs and upgrade to 7.23 was recommended. It makes me confused because 7.10 is running with the same amount of data aprox. 10 months without any problems with indexes -- Katarina Hamzova Voice : +42 7 5384324 SWH s.r.o Bratislava Slovakia Internet : Katarina.Hamzova@swh.sk