libexpat.dll

File libexpat.dll is malware or can be infected by malware:
PeopleOnPage Hijacker, PeopleOnPage.Apropos BHO, Un.named Trojan
You must run antivirus software as soon as posible to check you computer.Also Be Aware of this dangerous files:

bhixqjnc.dll Removal instruction
npclntax.xpt File
File name pbpxrrpj.dll
installdrivecleanerstart[1].exe File
Removing ctbr.dll