What is md5.db? Should I remove it?
The md5.db file is dangerous to the computer system and your privacy. It belongs to a parasite, whose payload may differ depending on its type. While relatively harmless pests may use md5.db to degrade system performance, display commercial advertisements or perform other annoying actions, really dangerous parasites may use md5.db to damage your system, infect files, corrupt installed software and violate your privacy. DO NOT open this file!
The md5.db file is installed and used by AdProtect.
In some cases a presence of md5.db does not mean that your system is infected. The file may actually belong to some fully legitimate applications and therefore must stay intact. If you are in doubt, please scan the md5.db file using you regular spyware remover or antivirus program.