malwarebytes found on my vista sp2 the following 2: C:\Users\...\AppData\Local\Thinstall\Cache\Stubs\16c45ebb594127bee8f8f44d1d6e2d3b9ff63d3\pdfSaver4.exe C:\Users\...\AppData\Local\Thinstall\Cache\Stubs\47479dcab2124cfb767ff48b3579f364f6c2432\verclsid.exe pdfSaver4.exe is a pdf-xchange file, and verclsid.exe is a windows file. now, since i read that many threats use known file names to camouflage themselves, i' m wondering about these two (otherwise i know most of the cracks and gens i' ve used ), cause i'm not familiar with stub programs. moreover, since i use this vista sp2 setup for some years now, i see in windows explorer that verclsid.exe and pdfSaver4.exe have been both modified in october 2009, and i have to say i haven't had any terrible issues since that time. i also used jotti online multi-engine virus scanner to check these 2 files, whereby only crappy scanners like arcavir, virusbuster and clamav (this one is not even intended for windows) found a threat with both files. any ideas?