I am logging 5 channels at 1 second intervals on a i7 laptop running Windows 8. I started the program at 1430hrs UTC to do 24 hour worth of samples (60x60x24=86400 total). Looking this morning 0800hrs UTC expecting the data count to be well over half way but was supprised the the samples was only 38000+. Watching the counter, it was counting very erratically.
All the sleep fuctions on the laptop are switched off (as far as I can tell).