Microsoft will be releasing several security updates. Some of them will require a reboot of your SBS server, if that is the case, you need to be aware of the potential issues you might see if you haven’t taken any actions after last month’s security update MS08-037.
Please read the following post, be familiar with the potential errors and make sure you implement the recommended solution before your next server reboot (even if you don't install anything). Some Services May Fail to Start or May Not Work Properly After Installing MS08-037 (951746 and 951748).
Source:→ SBS Blog