I've noticed that my MicroPOG and Stereo Electric Mistress get warm to the touch after a few minutes of being plugged in. The EM is only slightly warm. The MPOG is noticeably warm, toasty enough to warm your hands on. It doesn't matter if the pedal is on or off, so long as it's getting power from 9v DC in, it stays warm. These are the only pedals I've ever noticed warming up. Both are digital, both from Electro Harmonix. I am concerned that the heat could shorten the life span of these pedals, especially the MPOG. I would be willing to drill holes in the casing if it is necessary to prevent the pedal from burning out, but I don't know if the heat is problematic enough to worry about. Or if these pedals are already doomed to suffer the fate EHX's reputation has for dieing. Any advice? I'll examine them some more tonight by opening the pedals up after they've been on for awhile and trace down which component is generating the most heat. Has anyone else ever experienced a pedal getting warm? Did it eventually stop working?