Can you doublecheck the big3d version on the F5 device? You shouldn't be getting any 806 events if the big3d agent has been upgraded to v10.2.1.3. You can follow the steps described in this post (a few replies above), about running the iqsh command on the F5 device. If you rather prefer to override / disable the rules producing the 806 warnings, you can do so by following this article: http://devcentral.f5.com/wiki/default.aspx/MgmtPack/PerformanceCollectionAndMonitoring.html and look for the specific [collection] rule that causes the problem. Are the 806 events about the cpu_info rule?
Let us know about the big3d version or if you need any assistance disabling the collection rule(s).
Julian