excellent news about 18.104.22.168 I will install it on my iMac and MPB and check to see if the issue is resolved.
agreed, the other issues should be discussed on the appropriate existing theads :
Disappearing Virus : mac osx - virus midi device disappears
Summary: this has been going on for a long time in various version at least every 5.x.x version Ive tried!)
MidiServer CPU usage: OS X Midiserver CPU usage
Summary: I don't get this issue - but from this thread it looks highly likely its caused by excessive active sensing midi messages, possibly Snow specific?
@Marc whist what you say is true, the Time is a good indication of actual load, and this was also high... as I pointed in the thread usbd* also looked 'higher than normal', again an indication the active sensing is an issue... of course the question is why so much active sensing... this could be caused by the Virus see issues on usb traffic... the only way to know is to ask the developer to check the code!
(* yes I'm very well aware usbd is used by other drivers too... so it can only be an indication, but sometimes we have to look for other 'supporting evidence')
Sadly both of the issues were reported a very long time ago, and neither were resolved, so of course they keep cropping up on other threads... they people believe are related, its a pity the issues are not being followed through to a conclusion which would result in less frustration.
anyway, thanks again for looking in the MidiServer issue, (Id be interested to know the cause/fix, id your willing to be open about this.. out of idle curiosity), I look forward to testing this later today