I'm using LimeWire Pro 4.14.12 under Windows Vista. Windows Defender has been blocking a file (after installing LimeWire PRO) called "explorer.exe" titled "Windows Updater" sitting in a folder called "updater" inside the System32 directory (full path; C:\Windows\System32\updater\explorer.exe). What is "explorer.exe" used for, and why does it seem like its Microsoft related???