"BullGuard’s LiveUpdater keeps a flag on the disk called "PendingSystemReboot" when it needs a reboot to install updates. This file is scheduled for deletion at the same time as the updates are made, by use of a shared registry key. Some other application / installation package might want to use the same shared registry key, and replaces BullGuard’s entries with its own. Thus, the PendingSystemReboot file never gets deleted, and the LiveUpdater gets stuck thinking it needs a reboot."
Solution
1. Browse to the following location on your PC and delete the PendingSystemReboot file manually:
C:\Documents and Settings\All Users\Application Data\BullGuard\LiveUpdate\Flags
2. Go to BullGuard’s Main section > Account tab and update the application once more.
3. Restart your computer.
Note: “Application Data” is a hidden folder and you may need to follow
these steps to make sure you can find it. Alternatively, you can hold the Windows key from your keyboard and press “R” at the same time. Copy-paste the path mention above into the “Run” dialog that appears and click
OK.
Do NOT post your problem in someone elses thread.