Have YOU played all the levels through yet?

I get hitting a bug on OJNE of the levels.
I dont know which one is it, I'll post a screen-cap when I get home.

It successfully takes out the target "stone" but doesnt move to the next level...
Could I be hitting level 10 maybe? It seems like Ive played that many levels...

Thoroughly enjoyable way to waste time at work.
Ive always liked these sort of games...
And I love the new-level animation with the hexagonal 'manhole covers'
flying away into space...

[EDIT] I was hitting level 10, so dont worry about it.
It would be nice for you to add a display showing which level you are at.
Got a couple of ideas for increasing difficulty later on. (NOT in order of difficulty)
1> 'blackout' the hexes except start and goal, and only light-up a few hexes under the mouse.
2> 'blackout' all except start and goal, and only show one hex under mouse,
and have 'laser-beam' light the hexes is goes near in a strobe-effect.
3> dont pack the hexes so close, and have them 'drifting about' so its harder to focus on them.
4> have some hexes either randomly or regularly rotate themselves.
5> have some hexes 'direction' or 'type' hidden at all times. So you can only figure out what type they are,
and what direction they are facing, by seeing how the laser passes through them.
6> Have the number of hex-click you make alter your score. More clicks, less score. Or something like that.