WP7 update fails when using laptop docking station, works when direct to laptop

When I plugged my WP7 LG-E900 today it told me there was a update. When I tried to install this it failed, twice. So I changed USB cable and plugged it directly into a port on my laptop, not my usually phone syncing cable plugged into my laptops docking station, and it worked.

So not sure if it a USB cable quality issue, or a USB port issue, just something to remember.