Today, while playing Strange Journey, i noticed my DSiXL was not in sleep mode when it was closed. The problem is: No game loaded, sleep mode is fine. Any game loaded, it keeps sleeping and "waking up". I tested NSMB DS 'cause Mario says "Bye bye" and "It's-a me Mario!" on sleep mode routine, and Mario didn't shut up. Sleep mode was fine until i update wifi plugin, usercheats and savelist.bin yesterday. What could be the problem? Problem solved. Apparently, my akmenu4.nds got corrupted. Reinstalled AKAIO 1.8.6a and everything is fine now.