Hi! Is there any progress in the bug #2539 ?? It seems that the patch published there which is against a rather antiquated boost version is the only solution to the problem of iterator_adaptor/facade constructs which are random_access-tagged in order to make use of true random access operations in distance/advance operations. This is critical in performance relevant code... So is there any progress in incorporating some fixes in the public trunk? I understand that the problem is a misconception of the stl there, but an official solution would be great here... Sebastian