What particular behavioural setup did you have in mind Eddy?

They are both configured pretty much the same (except work uses the Network guard - small office), and at work their version was updated to 4.5, while mine was installed @ v4.5.

I only mention it because the PC with the dupe files, is experiencing some problems - freezing when in use etc, and having to be rebooted. Also, all the versions that have been updated online seem to be slow in showing the summary after updating - small thing i know.

So would a clean install help?