Recording data sometimes contains wrong data?

[qwertylex]

I have an ADP3450 I connected via gigabit ethernet...
I recorded 4 channels at 1MHz, with a length of 60 million samples.
The first time, it recorded strangely.
The progress bar went along very rapidly, much faster than expected for the specified record time (see the attached screenshot where it recorded for 28.625s). 
The second time it recorded normally as expected. (also why did it record for 59.03s rather than 60s?)
Why would this happen?
This wasn't the only time it occurred. 

[attila]

Hi @qwertylex

The "Read:" refers to the time it tool to transfer the data from the device to the computer.
The odd reading may have been caused by an network hiccup, but in this case a warning should have been displayed. I have tested this functionality and it was working for me, but I'll try to reproduce it.
You could limit the capture to 128MS total, or 4x32MS, to be fully device buffered.