Shortcuts to documents in Windows 7 start menu can cause freeze

I have given up putting (2) shortcuts to documents into the start menu of Windows 7 to bring up these docs when Windows starts. (So it is just possible that a recent update has cured my issue.) More often than not it would work as expected, but a significant minority of times LO would be frozen and nothing short of a full restart would cure the problem. Have others experienced this? (I reported it as a bug, but no joy.)