Since version 0.5.140 the plugin hangs my IntelliJ IDEA, and I have to kill it using the process manager. While hanging, the CPU goes to 100%, all 4 cores. This happens while editing Scala code. It hanged about 3 times in the last 5 minutes, so it is completely useless for me. It is probably something added lately, because in 0.5.129 I didn't encounter any such problems.