Review the power settings / power plan for the server or workstation where the Mobile Service is installed. A server or workstation that enters a low-power state, such as "sleep" or "hibernate", is effectively turned off thus turning off the Mobile Service.

For a Windows 7 workstation:
http://windows.microsoft.com/en-US/windows7/Change-create-or-delete-a-power-plan-scheme

For a Windows XP workstation:
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/pwrmn_managing_power.mspx?mfr=true

For a Windows server operating system, search the help feature for Power Plan or Power Scheme.

Note: We provide links to third-party websites in an effort to help you resolve your issue. We are not responsible for the information on third-party websites, and we cannot assist with implementing resolutions from these websites.
Please contact the appropriate software vendor or IT professional for assistance with this process or issue, which is beyond Blackbaud's scope of support.