LOL, sitting normally makes waiting less irritating . Remember that BBM 5.0 is still "beta" so you may have great performance (as I do) and you may have other issues.
H.A.I.B.B as mentioned this is still beta software so you should expect some issues. There are persons who have no issues and then there are those that do have issues and have to resort to the older version and wait for the official release. I am using OS 4.6.0.282 and have no issues with BBM 5, not sure if that is because of the OS or just luck, but if you're having issues, you may have to revert to the 4.6 version.