sgc15.exe
[What happens]When you install Adobe Reader 8.x, a program called "sgc15.exe" tries to access internet".
Path to sgc15.exe: C:/Documents and Settings/[user_name]/Local Settings/Temp/Adobe_Downloads/sgc15.exe
[What's the problem]
Adobe Reader comes with Adobe Download Manager. It seems Adobe Download Manager has a problem.
[What to do]
Download "Adobe Reader Only" from:
ftp://ftp.adobe.com/pub/adobe/reader/win/8.x/8.1.2/enu/ (English version)
ftp://ftp.adobe.com/pub/adobe/reader/win/8.x/8.1.2/jpn/ (Japanese version)