Hasta La Motion!

I’ve been running nuke 5.1 on linux (64 bit) for a while now and am very happy with the performance except for these 2 quite annoying problems which are really holding me back to make the full switch.
I’ve been hanging on these forum’s for a while now but did’t see a thread about this.

First, does anybody who runs nuke (5.1) on linux (centos 5.2 64bit) have problems keeping the viewer on top of the DAG, i mean every time i move or adjust a node (i work in classic layout 6) the viewer disappears.

Second, the performance of framecycler is very poor on my box, it cant’t keep the sync or just freezes.
I think it might be the nvidia driver config but i tried pretty much all the settings, It could also be a caching issue since if i clear the cache it runs ok for one time but after that same problem.

Does any of this sounds fammiliar?

Thanks