Things like "Slush must do so and so" are pushing a bit too much beyond the boundaries. Slush has given you no promise to perform, nor has he signed any contract to do so. So - there you have it - there is no promise that he will do anything. He may do so or maybe not. If he does - it will be if he wants.
+1 and i would also add: when he is able to, because he is a human not a machine!
He did his best up until now and we trusted him! Now he is unable to take much care for the pool, because of more important issues - personal/family.
'Rats leave the sinking ship first' - if you are a rat, then leave. The rest of us (sailors) should trust our captain and keep the ship cut through the waves during storms ... at the end we may just not have rats on board

This is mine point of view - chose yours!
Fair enough everyone is entitled to his own opinion. If you like loss money you are welcome. We call that in Slovenia Idiot tax... I don't agree with that. Slush has on average about 18 to 20 blocks per day(let say 20). So 20*(25+some fees)*0,02*130$=1300$/day. For that money I do think he should find someone if he is away for 30 days to look at pool. In last 30 days we did see error on everything but webpage... So if you can accept that OK. But I have probably invest much more then you. So if Slush can't find a way to fix his pool even when he knows it has issues in 30 days I really can't stay and loos 3$/day or even 6$/day(depending on a day)...
You had 2 invalid blocks and that is 100% loss on a block.
Wrong! Once again: assume that at such blocks there was just no new round started! Why? Because someone else found it before us and we just didn't know yet ... if we knew, then we wouldn't start a new round = no invalid, but still no reward so we have lost
NOTHING!!!
Yes and no. Depending on the way it happens. If it was found but because of a bug wasn't sent to the network fast enough it is a 100% loss. But then again it could be because the new work wasn't send out fast enough because of the bug and in that case it is hard to say. Pool was working on the wrong block for x amount of time for y blocks. Block could be found in x*y amount of time... So in one case it is 100% loss in other could be anywhere from 0% to infinity(but probably average out to 100% long term)...