One Click Support always wants a reboot - but why?

Hi, I'm using NIS 2011 - version 18.1.0.37 - german on a Win XP SP3 machine.

 

As I did yesterday a scan - like every week - with NIS 2011 the one click support said to me, that a reboot was required. I thought, maybe because the new inline update (18.5), but no, after I rebooted and did another support scan, I was asked for a reboot again. As I did today,, the same was happening to me. It was never in the past, so I'm asking myself, what's the exact reason for this behaviour... I've installed O&O Defrag Professional 14.1 (it was a christmas present) 2 days ago. =6= SOftware GmbH is a famous and very wellknown company here in germany, maybe even some US citizens know from them (their website: www.oo-software.com) But I don't think, that this could be the rason...? Would be nice, if I'm getting help...I'm using NIS for a couple of years and every problem what I've had, was in the most cases nothing very special - so I hope, it's the same again at this point...

 

Greetings from Magdeburg, Germany! - God, the snow here is really annoying :D