4.3.7 array serialize problem

Hi! Have PHP 4.3.7, magic_quotes_gpc = On Have a multidimensional array made from values from a POST form. It addslashes() every field of the form as expected, like (') => (\'), etc. When I searialize the array to put it into a mysql db it seems to fail to describe the string lenght of values with the (') character, like this: $arr['PestName']="a'cqua", it results the following in the serialized string stored in the db: a:1:{i:1;a:5:{s:8:"PestName";s:7:"a'cqua".... note that "a'cqua" is not 7 chars lenght, but 6. The problem is when I try to recover the array with unserialize(), it fails, returning false. It is obvious that php is counting the (\) character when serializing the string, but it stores it without it in the db, so when it tries to recover the array, it fails. Is this a known bug? Are there any workarounds you know? Thanks a lot in advance. Hernan