He's saying he use his temp folder as the same as his download folder.
Just because you think SAB is far superior that necessarly does not mean everyone else likes (I like it, but don't use it as my main client). Using another client would not elevate his problem, he shut down his computer without saving his data, plain and simple.
And no NL doesn't name the temp files the same. It names them 0019 0020 etc..and no extensions, there probably not his temp files at all but rather the rar files he's actually downloaded, NL doesn't delete them till there extracted.
Also if he was download to the drive that Windows7 or Vista is located on/ or his download folder is in is program files, you have to have admin prives, and it won't save data there unless you give it permissions.