Hi, I have Battery3 installed..(actually all of N.I Komplete) i wouldn't expect that plugin to be "lite" on resources, it's not. it has a number FX, and multi-layered sounds, as well as some other non-cpu-lite features ~ like it's gui. i only experience xruns with that application, sometimes when starting, and usually on exit. Otherwise, it runs perfectly fine. - this is using my ubuntu 10.10 64-bit (quad-core). I am using wineASIO 0.9.0 (beta), with Jack2, wine 1.3 (actually "wine-rt"). ~ from the KxStudio repositories... However, on my laptop (coreduo) battery3 does cause some xruns. usually when switching drumkits, and if my CPU and DSP load are really high, during playback, i may also experience xruns. also, I had to revert my Battery3 install, as a recent update that added some features, seem to make the plugin less stable and reliable under wine on my machine. (including more xruns) 1.You might want to use wine-rt, and specify proper priorites for battery3 and see if that helps... 2.one way of reducing xruns on my laptop, was to disable SMP support in Battery3's "options" section. 3.You also could limit how many outputs Battery has, i think by default it will have 8 or 16 - which may also be giving you more xruns. 4.You may also want to adjust the DFD stuff in battery. The xruns could be because of a slow-disk too? or.... 5.if you happen to be using a slower machine, i wouldn't bother with Battery3. Instead, i would ditch it for a mmore minimal sampler such as "specimen" or "linuxsampler". You can take all of the Battery3 drum sample librairies from your ISO/or hard-disk, and map them in either program. then you will be using more like 4% CPU even when playing many multi-layered sounds at once. This is actually what i do... why bother wasting large amounts of CPU on a task, that really should take very little cpu? there's my cents, hope it helps jordan