actually there is a problem with slimline ps2's and ps1 memory cards. mine did it. i had an AWESOME ff7 file on disc 3 (i was playin on an original ps2) then i played on my bro's slimline ps2 (so i cud luk at the inet as well) and it corrupted my file . u can either:

a) simply ask to borrow ur firends ps1, there's no need for breaking and entering
b)use an original ps2