Update never finish, WP remains in maintenace mode

Hello

since version I do not know any more the BackWpUp plugin update always does not finish itself. My WP site remains in maintenance mode and I have delete .maintenance file manually to get my site back online.

It just happened again when updating from version 3.0.10 to 3.0.12.

Is there any install log file I can send for analysis?

regards

Josef

http://www.hjgode.de/wp

http://wordpress.org/extend/plugins/backwpup/