My computer acts weird in my musics folder. -When I want to change the name of a folder the message comes up: This folder is shared with other people But I know I never shared the file. In properties/sharaing tab/advansed sharing there is sharing permission for "everyone". Is it a security issue? My updated security software also can not detect anything. I scanned all files but I did not find anything. In security tab there are also two permissions for "WMPNetworkSvc" and "HomeUsers" and I dont know what they are. Are they safe?