MirrorBit FLASH Read/Write Problem

 Hello: 
 
    I would like to know if someone out there has experienced the
following
problems in the S29GL064M90TFIR60 FLASH (MirrorBit Technology):
 
    - After two consecutive readings at the same random memory location,
the first reading is
    all zeros, and the second one is the data OK.
 
    - After programming one word to a random memory location, the data
stored is all zeros or the
     adjacent memory location is affected with all zeros.
 
 
 
Thank you
 
Billa