After installing Avast 4 home edition, I get an error message on system startup (missing or corrupt file MSVCl70.dll, that's the lower-case letter 'l' in the name after the "MSVC"). On clicking the Avast Icon, I get the message "The ASHBASE.DLL file is linked to missing export MSVCl70.DLL:??0exception@@QAE@XZ." - which looks pretty weird.
My MSVCl70.dll file is only 8k in size, so from this and the weird error message I'm guessing it is corrupt.
Doing a web search for this file turns up nothing - is it an Avast dll?