So.... ignore "critical" issues, complete what we promised, and be made to work Saturday to resolve "critical" issues; or help with "critical" issues as they arise & resolve them, miss some of our promised bugfixes, and be made to work Saturday to meet our promises. What a choice.
Option three: build in a 100% buffer on all commitments, so that we have time to deal with critical issues as they arise without impacting our commitments to other groups. Yeah. That's a winning strategy, but it's the only way I can see to keep our weekends to ourselves.
Oh, yeah, and never mind that I've averaged 10 hours a day. Bastards. Why is it that I don't see the VP of Engineering, who says we have to work Saturday, in here late at night? I could go on and on, it feels like my group is the only one being pressured like this, even though several of our "critical" bugs are due to bugs in code other people have handed us! AAARRRGGGHHH!!!