efenaye: not exactly ... automatic vacation only applies to games which would time out on that day

suppose you have 3 games running, all with 5 days per move

your opponent made his move in the game A and B at the 10th of that month, so they would time out on the 15th

your opponent made his move in game C on the 11th of that month, so it would time out on the 16th

you have automatic vacation enabled, and wont be online ... so on the 15th game A and B would time out .. due to automatic vacation they have 24 hours added, so they will now time out at the same time on the 16th

the game C has nothing added to it .. because it doesnt time out on the 15th

now you come online at the 16th and only have time to play 2 games .. but all 3 games will now time out on the 16th ... so on the 17th one game isnt moved in yet .. and it will cost you another vacation day

if you would have set the 16th to be a fixed vacation day .. then 1 day was added to all 3 games and you would only have to move game A and B on the 16th and could move in game C on the 17th .. which would have cost you only 1 vacation day

so when you know your days for sure ... use the fixed vacation days .. they will cost you less in the end ... use automatic vacation days only for emergencies or days you arent sure about

hmm .. i hope this makes sense :)