A hotfix is available for OnlineBackupClient version 3.9:

http://www.backupclient.nl/hotfix/hotfix_3_9_0_2.exe

This hotfix fixes:

- Performance problems when making a large local backup

- Problems when backing up SQL databases

- Several issues when using OnlineBackupClient on Vista

In case the hotfix does not work properly you can also install the hotfix manually:

Download http://www.backupclient.nl/hotfix/hotfix_3_9_0_2_Binaries.zip

It includes a readme.txt file explaining how to install the hotfix manually on a machine running OnlineBackupClient 3.9.