Every time, when i hit k button in a terminal window in vim, so it happens fairly often, it invokes the Find pop-up. I could not find where this can be turned off.
I do not have this problem at home where I also run 10.10.
I had similar problem for days. When I pressed "B" key while writing commands in terminal, set title dialog appears. It was so boring.
Finally I realized the problem. It's because of "Editable Menu Accelerators". I hovered the related menu item (in this case Set Title) and changed the shortcut from "B" to another combination. Backspace removing the sortcut.
That should be either a function of the window manager or the terminal emulator. You didn't say which terminal emulator you are using, but most have menus to handle keyboard shortcuts.
For the window manager, click on the Xfce icon on your panel (has the X with the mouse), then go to Settings > Keyboard and click on the "Application Shortcuts". You can remove the shortcut with the "- Remove" button.
If you do not see the entry listed there, then it is likely the function of the terminal emulator. Let us know which emulator you are using and we can give more info for you.