weird usb keyboard and mouse problem :(

Hi-
i did try to find a thread concerning this but failed.
it's also a bit hard to explain- not in my native language:

i recently bought a usb microsoft Keyboard & mouse (connected via a usb external hub 'station')
they seemed to work great for a few weeks, but in the last 2 weeks something is wrong:

first, the keyboard problem:
when i type, i suddenly get a weird keyboard response.
let's say i was going to type:"my name is Roei".
in the middle of typing i get something like this:
"my nammmmmmmmmmmmmmmmm" - for no apparent reason !
i type correctly, no mistakes or over pushing the 'm'.
it happened many times, quite suddenly, every minute or so.

and the mouse problem:
i get those 'mini lags' when the pointer freezes for a second, and then jumping to where i am. also happens within every minute or so.

this is very annoying and frustrating, and i NEVER had those problems beforrrrrrrrrrrrrrrrrre (see ?! that's the real time keyboard going nuts !!)

i think those two issues are related to something in my system, but i can't figure it out. is this the graphic card? the usb ? (all drivers updated)

please help !!
thanks. (i think i've written down all my system specs in my profile)

Sounds like a bad keyboard. It's annoying when it happens with brand-new gear, but at least it's covered under the warranty, right? I'd see about doing a warranty return/replacement, or else get a refund and buy a different keyboard/mouse combo.

thanks, but- are you sure?
the mouse & keyboard starting doing this at the same time? doesn't seem so logical..

Could be a driver problem, but Windows 7 should have automagically installed drivers when you first connected the mouse and keyboard. I know "update your drivers" is a cliche in these sorts of forums, but it does sometimes fix the issue.

What brand is the mouse/keyboard combo? There may be a manufacturer-supplied suite of support software that will help. For example, Logitech stuff uses SetPoint software. Such software shouldn't be required to get basic function, but I don't know what else to suggest at this point.

So this is a wireless mouse & keyboard? What kind of wireless? Bluetooth, or regular wireless (aka RF wireless)?

How much distance is between the wireless receiver & your mouse & keyboard?

Some wireless gear is really flaky, and doesn't work very well if you get any kind of distance at all.