I am using Ubuntu 12.10. I find that button clicks for Ctrl, Shift and Alt persist for a second or two. That is, if I press A, I get small
a. However, if I press Shift, wait for a second and press A, I get a capitalized
A. Note I am not pressing Shift and A together to produce the uppercase letter, there's a gap of a second between two presses.
This is very annoying because whenever I am on a page in
Firefox and accidentally press Ctrl and scroll down using touchpad it produces zoom out effect and font gets smaller.
Please suggest a remedy.