Hi All, Greetings ! I'm a new join to this forum. I would like to have ur help in tackling one problem which is haunting many IT professionals , as indicated by the postings...the memory read write error. we've oracle 11i apps on oracle 10g database. Only from a particular page , when a thumbnail is clicked , sometimes, the user gets the URL error and at the same time , the application server throws the message "Instruction at memory XXXXX could not be written.... click OK to terminate ......" . This frequency of this message has increased since we did the windows update recently. pls help in solving this. any help is highly appreciated. our apps server set up ---------------------- 32 bit windows on 12 GB RAM All client PCs are of good configurations.