Motu 828mkii Glitches And Pops Options

[Drainland]

Hi,

I've had a motu 828mk2 for about a year (although haven't used it constantly) and I keep getting the occasional glitch or pop on an audio track or instrument routed through it via logic pro 6. ALthough it doesn't happen a lot - it's definitely a cause for concern. I've had the same problem with various buffer settings, different revisions of logic, different motu drivers, have trashed preferences etc. Also, it is not caused by a conflict from other digital devices connected... I can only assume it's the motu that is doing it. So what I'm wondering is : is this normal behaviour for this unit to do something like that occasionally? Or does anyone have any other suggestions that could help stop this?

many thanks!