Ok just ran a boot time and the wiredest thing happened when the system started up: It appeared to be going thru the motions of setting up the operating system and preinstalled software for the first time, like it'd accessed the recovery partition and begun loading all the defaults.
The hardware is a Lenovo laptop running Vista SP2 32bit
Luckily it reversed itself on the next boot up, but Really freaked me out.
Couple of differences to a full (or partital) system recovery was that half my desktop shortcuts were still there,
but everything else was starting to set up unconfigured. All the preinstalled Lenovo software that is, was starting up and the Windows Welcome screen popped up. The desktop background was also the default Vista one, etc.
The only clue it wasnt gonna need a full hard drive recovery, was a bubble message saying it'd loaded some sortof temporary startup mode (like a sandbox) and none of the settings would be saved.
It WASNT any safe mode, just looked like a regular system installion routine, and no mention of any fatal errors or anything
OK, so it was possibly my fault: Id set the boot time scan earlier and forgot about it, then later, thought to run a temp file cleaner using Comodo System Cleaner, with its safe operation mode were it reboots the system reboots to complete the task
LONG STORY short, I wont be trying the boot time scan again.. unless it really was Comodos fault ?? Btw it didnt detect any virus'