My view is that the DisplayLink installation should not edit the global asl.conf file in any way. I don't think it's the right approach for installers to alter system files when there are other alternatives.
You should use an ASL module, like I outlined in my blog post. My reasoning is:
1) asl.conf can be overwritten at anytime by a system update
2) it is clear who has requested that these stop entering the log - and this itself is logged when ASL starts
3) ASL will/should deal gracefully with cases where people have multiple 'claims' on the messages
4) Removing this (such as when uninstalling the drivers completely) becomes trivial as it's one file to delete. Removing an edit to asl.conf, which may have been subsequently edited, isn't going to be reliable.
Just my thoughts. Looking forward to this making it into the standard installation.
James
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