UnInstall.exe

File UnInstall.exe is malware or can be infected by malware:
Matcash Trojan, Matcash.dll Trojan, Toolbar888 Trojan
You must run antivirus software as soon as posible to check you computer.

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Also Be Aware of this dangerous files:

Also Be Aware of the Following Threats:
Fission Trojan Symptoms
WinNT.HackerDefender.Rootkit.Tro Trojan Information
Malware Toolbar Toolbar Removal instruction