The optional library has a number of new failures now. I see a checkin to boost/optional/optional.hpp, made by Fernando Cacciola: revision 1.9.2.4 date: 02/03/07 02:08; author: fcacciola none_t/none reimplemented to avoid precompiled header issues (thanks to Joe Gottam) optional<T> now has direct relational operator optional<T>::operator-> fixed for reference types With the following on-list commentary: I just commited the fix to RC_1_34_0, just right on time before the code freeze tonight. I'm concerned about two things: 1. The "code freeze" mentioned above is "complete dead freeze", and it was agreed on this list that all commits, even before this dead freeze, would be posted to the list for approval. I wonder if this agreement was not clearly communicated? 2. Apparently, the change broke something, including mainstream compilers such as gcc-4.1. We're now in a dead freeze. Fernando, what do you think we can do at this point? - Volodya