Hi,
if you are wondering about a size-bound (1 MB) on blob and text fields after upgrading to PHP5.1.4. You might try to increase this limit by using the setAttribute() method.
This will fail. Instead use the options array when instantiating the pdo:
$pdo = new PDO ("connection_settings", "user", "pass", array
(PDO::MYSQL_ATTR_MAX_BUFFER_SIZE=>1024*1024*50));
This should fix the problem and increase the limit to 50 MB.
Bye,
Matthias