Strange NOD update behaviour

Hello,
Recently, something strange has happend with my NOD32.
My NOD checks every 1 hour for updates, however some times I manually checks for updates. My latest version was 2.000.9 for all components and 1.776, however NOD alert me that was a new component upgrade: It was NOD32 Base 2.000.9. I decided not install them. Later, I has press update now and now starts downloading a nup file. Now in my NOD32 system log, said two time: NOD has successfully updated to 1.776
Can anybody give me ideas about this?
Thanks.