Dollwife Pink

What is odd about all of this is it is happening with floor prims that have existed in SL from anywhere from weeks to years. It is only happening with a cylinder, if i change the prim type to rectangular the bouncing stops. It is not just mega prims, a newly rezzed cylinder has the same effect. I have tried different materials, same effect. I am using the latest version of SL Viewer 2, no Avatar physics objects being worn.

I am running into the following problem... Standing on any floor prim with hollow at any level causes my avatar to bounce up an down. I have tried using 40m x 40m x 0.5m cylinder with a hollow of 40%. Thinking it might be a megaprim problem, I created a 10m x 10m x0.5m cylinder. No problems if there is no hollow, but once hollow is used the AV bounces. I have tried it in 3 SIMS and at varying elevations. Any suggestions on this problem? Has a JIRA been filed?