This is not directly Max related, still open for advice.
Since a couple of days my MOTU 828mk2 firewire interface started acting strange. Every hour or so it glitches for a couple of minutes. I'm hearing crackles that sound like clock sync issues. It's only there when there's a sound signal, not in silence. It only happens on sound running through software (both Max and ABleton), not when I route my hardware synth's audio straight to the outputs on the MOTU, bypassing any software. Ie. the glitches occur when signals are passed between my computer and MOTU, not when signals are running only through the MOTU.
My system's a OSX 10.8.2 hackintosh with Sonnet Tango800 firewire PCIe card. This setup has worked fine for 2 years. The MOTU is much older though, 7 years or so. Does this sound like it's wearing out?
I haven't run any software updates or installations that I could relate this to. Any ideas?