Why is my Logitech mouse not functioning properly in OFP?

In OFP versions 1.00 and 1.10, some Logitech mice will not function properly with the Mouseman drivers installed. If you experience this problem, using the default Windows mouse drivers should resolve the problem.

As of OFP version 1.20, this problem should be resolved. However, users of Logitech IFeel mice are reporting problems with IFeel's force feedback functionality not working in OFP V1.20, even though OFP documentation says it should work. BIS have admitted that IFeel support is not functioning in OFP V1.20. This is corrected as of version 1.30.

(Source: Ondrej Spanel, Lead OFP Programmer, in this BIS FAQ item).

Some users report sluggish or laggy movement when playing OFP with some of the latest Logitech mice. Try downloading and installing the latest Logitech MousWare drivers to see if that resolves the problem. If that still doesn't help, some people have resolved the problem by opening up the Windows Task Manager (by pressing the CTRL+ALT+DEL keys) and closing the process named EM_EXEC.EXE. This is the Logitech MouseWare driver program. Don't worry, your mouse will work without it too. It just adds some extra functionality support to your mouse, such as redefining button actions and the like.