Which usb input? The one closest to the edge or the one closest to the center of the computer?
If Access could just start testing on these imacs then surely they could reproduce the problem.
Play for about an hour and you will get hanging notes, out of sync arps, Virus not recognized, etc.
Or don't play it at all and random notes will just start ringing out!
My imac is a 2010 i7 running Snow Leopard and Logic 9.1.5. I've been plagued with these problems
ever since getting my Virus last summer and no updates seem to help at all. There are already multiple
threads about this. It's definitely an issue and I find that I get more problems when using the TI as a
multi instrument in Logic rather than just a single channel plugin.
The one closest to the centre for the Virus - then my RME Babyface (USB audio Interface) goes on the USB closest to the edge of the imac.
Sometimes the ARP does go out if Iv been working on a project for a while and not used the Virus for a bit.... I Have to turn the virus off, shut Logic down and then turn it all back on again to get it back in sync --- but that doesn't happen too often for it to really bother me.
Im on an i7 too btw