In the "dock settings" window/ general tab, you can find an option called "Priority = BelowAverage when SliderDock is loading".
This option will give SliderDock a lower priority when windows is starting, meaning other more important windows files/ application
will load first without SliderDock trying to get in the way.
This option is useful if you selected "load SliderDock at startup".
However, some users reported that changing the priority will freeze SliderDock when you launch it(the rest of your computer will be fine).
If this happens press ctrl+alt+delete to open the "task manager" and in the processes tab search for SliderDock.exe, right click on it and select "end process".
Then go to the folder :
"C:\Documents and Settings\(username)\Local Settings\Application Data\ SliderDock" folder and delete the file "config.xml"