I posted this on another thread about net_connect issues (http://forum.nimsoft.com/t5/General/net-connect-consumes-99-CPU/td-p/16399/page/3), but I wanted to open a thread specific to the issue.
I would HIGHLY recommend rolling back to v2.73 until v2.9x comes out in Q4. There is a new (maybe not so new), more nefarious, bug that is turning off profiles when they fail consecutive ICMP tests. I am told by support that it only affects net_connect v2.8x and that rolling back to 2.73 will alleviate the problem.
I have case 91176 open for reference if you need it.
If you have any further questions, please don't hesitate to contact me.