http://blogs.technet.com/not-a-kernel-guy/archive/2008/11/25/3159124.aspxНа днях свалился в inbox вопрос: The documentation for QueueUserApc states "an APC cannot be queued from a 64-bit process to a 32-bit process or vice versa." However on Vista Ultimate x64, we can queue a user APC from a 32-bit process to a 64-biten-USCommunityServer 2.1 SP1 (Build: 61025.2)