First when you have problem tell us what CS version you are using (1.5 or 1.6) what other plugins you have, on what OS you are running it. Give us as more information as you can. Then maybe I or someone else will be able to help you.
Now actually Storm, it is PODbot related. You see - is shrink screen, + is to make the screen bigger. By default, PODbot's menubind was +. Thus, eliminating the ability to enlarge the screen after shrinking it. All you have to do spawny is to go into your keybinds, and just bing the screen enlarge to another button and push it ingame.
Later-a-much, and LONG LIVE THE D!,
(Link>>>MarD's Moddin' Site<<<Link) MarD