In a word, blows.
I have a backup job that uses the built-in task scheduler. Before SP1 the task scheduler would work just once and that’s it, I forget the actual failure message but I just had to stop using it. When SP1 came out I heard that many things were improved and I tried it again, it worked like a champ – or so I thought – when my machine is rebooted (maybe even when I just logoff – but I never bother doing that) subsequent runs would fail with “logon failure: unknown user name or bad password. (0x8007052E)” showing as the Last Logon result.
My Backup software is SyncBackSE, in the KB they offer up some free alternatives (I don’t really want to have to pay for something that should be part of the OS – and not be defective). I’m going to try “System Scheduler” from “splinterware software solutions”.