I had very high CPU (1 GHz 7447) load (higher than 90%) for several minutes - before installing apooler. The other symptoms were very slow and annoying webpage scrolling and high Sputnik closing (above 10 s). After installing apooler I observed the highest CPU load not higher than 60% for 5 s. Slow scrolling and closing Sputnik also have done.
I use apooler version 1.0a. (It is easy to check is apooler running, it should be listed by Status command in shell)