After discovering that there was an error in the PES 2009 PC version regarding the stability of various modes in PES 2009, Konami have released a patch today.
The official statement follows:
We are glad to announce that a patch was released as scheduled at 07:00 BST on 23/10/2008 to correct issues that have affected user save data in various modes of Pro Evolution Soccer.
Please be made aware that sometimes, during installation, the process may appear to have stalled with the window status shown as not responding for a few minutes.
We would like to thank you in advance for your patience and understanding.