I have a Logitech MX5000 Wireless keyboard and mouse that I use near our wireless router.
When I try and use the mouse it usually takes a while before I can move it again as normally,
however, on a different unit I set it up with too this don't happen and also, effect's the
keyboard and repeats a key press now and then. I think it's cause, that it is USING the same 2.4 GHZ band as the Router.Wireless devices are not always reliable.
You options are:
- Move the router away from your computer.
- Use a different channel on the router.
- Do not user wireless mouse and keyboard.



Does that mean then that I would have too change the clients settings as well. What should I look for on some of the Router's?You mouse and keyboard should be Bluetooth rather than Wi-Fi. This requires them to be "paired" once with you computer. Thor router should be set manually to a SPECIFIC channel and use the 54 maps.

Some routers, when set to auto, may cause interference with NEARBY devices.
Here is an article about general interference issues with Personal Computers. The information is a guideline to help resolve these problems.
Six Things That BLOCK Your Wi-Fi, and How to Fix Them
The article does not cover your specific issue. Your might find that a new mouse and keyboard will work fine. Or, you might just try a new router. some very GOOD routers are now on sale because they do not have all the new features. Most of these features you don't really need.
Here is a new list from CNET about low-cost routers that work good.
http://www.cnet.com/topics/networking/best-networking-devices/cheap/
Notice the prices vary a lot. But even the low cost models meet current specs for Wi-Fi standards.
But did you try an move the router? Even a few feet might help.




And the keyboard and mouse work fine with the router switched off or if they are moved away from it? While both the router and keyboard/mouse do operate at the same frequency, the band they are in is so noisy (your microwave oven even runs at around 2.4GHz) that any devices operating there have to handle interference so it's very unusual for a keyboard and mouse from a reputable brand like Logitech to be affected in this way.I ended up getting a different keyboard and mouse for the setup which, has not caused, any issues.So this topic is done.