I have a Samsung N140 running windows 7 and an o2 mobile broadband dongle.
When using the dongle and o2 connection manager to connect to the 3g network the touchpad becomes unusable. I have tried reinstalling both the connection manager and touchpad and reinstalling in various orders but it is still a nightmare.
I can kill off one of the touchpad apps in process manager (the bit which supports the scroll bar part of the touchpad etc) and it is better for a while but seems to get worse again.
Thanks for the response. I tried this last night and it hasn't helped at all.
It is almost like when I am connected to the broadband via the dongle the ctrl key is being held down and I can't do anything to make the pc release it.
I think I will either ask at an O2 shop to try a different dongle or will cancel my broadband contract. Since this is unusable I can't see that O2 are fulfilling their end of contract which more or less constitutes a breach of it.
Everything about this windows installation works perfectly well.
It works fine with all wifi connections, it also works fine when I tether it to my mobile phone (not an O2 mobile)! which would suggest this is a driver issue with this particular broadband modem, not windows.