Do Plesk update logs exist?

[ScottT]

Hello,

I installed MU #5 through #9 during the past few weeks. Within that period of time, my PHP application (Concrete5 CMS) started giving errors. I would like to determine if maybe a Plesk update I installed caused the errors.

My Plesk Panel - System Overview tells me this:
10.4.4 Update #9, last updated at Dec 21, 2011 04:12 PM

Automatic updates are off.

Is there a log on my server that shows what date/time I installed each update?

Thanks.