development version (3.4-RC4)
I just updated the SVN for one of my plugins. The SVN log shows:
Date: 13 June 2012 09:31:59
Local time is 09:48
The update appeared in the dashboard correctly but when the details were rethe "Last Updated" information suggests that it was changed 9 hours ago.
My Timezone is London.
I don't know if this is specific to wordpress or if it's an SVN issue.