I upgraded to Mac OS Mavericks and since then my PHPStorm caused problems. During typing inside the editor the CPU goes up to 400% and the typing lags. I didn't know what to do or what the reason is. So I reinstalled Mavericks. On a clean installation PHPStorm worked fine, without lags. I then put back all my data on my SSD (from backup and only personal data, no java or system binaries). I don't know if this is the reason, but PHPStorm now again lags if I type into the editor.
Have you experienced similar behaviour? Any suggestions what to look for? I have no idea.