[stickydatepudding]

The task meant that either the five new housemates or the nominated housemates would be up. As the five newbies failed their task, they went up instead of the nominated housemates. That's why Lisa and Charlie weren't put up. Then in addition to those five, the people who discussed nominations (including Charlie) went up as well as a punishment.

No one had their nominations voided as a punishment. The punishment was simply being put up. The reason the people who got the most nominations weren't put up was because of the task - it was either the five newbies *or* the nominees.