Hello, I?m Alan from Argentina Buenos Aires. My english is very poor. I put Ccleaner for scan a PC for delete temporal files. and Boom. Blue Screen on Windows XP SP2. My version of CCLEANER is 2.19.901 INFORMATION OF BLUE SCREEN: BAD_POOL_HEADER STOP: 0X00000019 (0X00000020, 0XE1088CCF, 0XE10894EF, 0X0D0402E2) I hope they can use for Fix. Bye!!