Would that effect things like sneak / hide not firing too?
It affects all kinds of timing issues. It's due to the limitation of the function GetTickCount(), which is used for timing in a lot of plugins. The max you will get out of that, is approx 49.7 days.
I was thinking about writing a drop-in replacement, that would have the same resolution, with a max of approximately 52 million years, hopefully that would resolve such issues.
htw