I did use search button and found no topics relating to my question. I use AVG Free as my anti virus, i also use CCleaner, i had this problem before and stopped using CCleaner, but i recently updated my pc to winxp pro sp2, and decided to try CCleaner once again, but whether or not i have avg turned on or off, i end find issues thru CCleaner, missing mui references, active x issues, i assume they are problems so i delete them thru CCleaner, however afterwards my avg no longer works. i really like CCleaner and avg, and i am all about free software, but is this an issue that can be fixed or do i choose which software to using again? avg or ccleaner?...thanks in advance for any help what so ever!