PS3 Super Slim with PS3Hen unstable after not being used for a while

I haven't used my PS3 in a month and I wanted to see if there's any players on SoulCalibur 4. Upon enabling PS3Hen and launching anything (and I mean absolutely anything) my PS3 immediately locks up on a black screen and I need to turn it off by holding the power button. Is this common with the super slim or PS3Hen has something wrong with it ?