Freeze problems & formation question

Hi everybody,

I have two keyclones on two PCs and I've been multiboxing (5 clones) for 2 months with no problems. But the last 2 days, my wows (or keyclone) make my first PC freezes (like a big big lag but I cannot even go back to Windows or launch the Task Manager or close wow). What can I do to fix that ?

I also have a question on hotstrings. If I configure a hotstring on my first PC it seems it doesn't pass to the other keyclone on my 2nd PC :
First PC - First clone $ -> formation
2nd clone e -> formation (strafe right on french keyboard)
3rd clone a -> formation (strafe left on french keyboard)
2nd PC - 4th clone e -> formation (strafe right on french keyboard)
5th clone a -> formation (strafe left on french keyboard)

It works on the first PC but not on the second one. Why ?

Thanks for your help.