GAH. Do NOT delete the stuff in there. Trust me. I don't care if you need space. DO NOT TOUCH THE FILES IN HIDDEN STORAGE.
It's your ExtROM, and all links to it are hardcoded. This isn't like the Magician Bigstorage, where the links are recoded; Your PPC is tons slower because it's trying to find stuff that doesn't exist anymore. Like, say, your configs.
If you want those back, you have to reflash your device. No choice.
Move "sig". For great justice.
Galaxy S2 i9100 OmniRom Nightly 0106 / Dorimanx 10.43v60 beta
Galaxy Camera EK-110 (stock rooted) (It only ever came with 4.1.2 so.)
Ouya (stock rooted) (it only ever came with 4.1.2 so.)
Liquid Community ROM 1.4 (Acer Liquid)
O2 XDA Atom WM6.1 Kuruma Final
HTC Touch Elf Opal Ultimate 3.2.1
LG KS20 Kiss20.4