Common Problems & Solutions - Client Side - Punkbuster Problems:I get kicked and get a message Punkbuster Disallowed Program/Driver 
There isent a 100% solution for this but you can try these steps and give it a try after every step.
-Disable all programs not needed when playing, speacialy programs like Daemon tools, Alcohol120%, Download managers etc.
-Do a complet virusscan of your computer, NO fast scans it needs to be complete.
-Re-install PB and DirectX and make sure you have the latest videodrivers.
-If nothing helps try un-installing your virus software.Punkbuster kicked player ' ' (for ? minutes) Empty Player Name Disallowed
This is becasue you have not choosen a name in Multiplayer Options in Options & Controls, if you dont have the option PLAYER NAME there it means that you dident press CANCEL - NO - CANCEL when the game asked you to create a Online Profile.
To fix this you have 2 options, re-install the game or go to the CoDWaW Profiles folder, located here:
Vista Users: C:\Users\YOURUSERNAME\AppData\Local\Activision\CoDWaW\players\profiles
XP Users: C:\Documents and Settings\YOURUSERNAME\Local Settings\Application Data\Activision\CoDWaW\players\profiles
When you find it do this:
-Create a folder in the profiles folder and name it what you like but for now lets call it smith
-Open the active.txt file in profiles folder and change what ever is say inside to your folder name smith then save the file.
-Try to start the game join a server rank to level 2 (takes 1 round), exit game and see if it worked.
If you decide to reinstall or make that profile you have to click CANCEL - NO - CANCEL every time the game askes you to create a Online Profile, dont ever create a profile if you are using a downloaded game. I get kicked out for: YOURNAME Punkbuster kicked player 'YOURNAME' (for 0 minutes) ... RESTRICTION: Corrupted File/Memory 
This is a big problem in CoD5 and here you have a few reason why it can happen:
You changed the CoDWaWmp.exe to a cracked exe(dont do that just the server needs to crack the game).
You are using cheats - I hope you cant
fix the game so that we never have to see your sprry ass on the servers.
Your downloaded version of the game is corrupt and have errors and you need to get a diffrent version so get the Reloaded Release
If its non of the abouv you can try this(or wait for patch 1.2):
1. Delet all the stuff in your PB folder
2. Go to evenbalance and download pbsetup or do the manual update
3. Follow the instructions
4. Try and connect.
If this still dosent help do this:
1. Uninstall the whole game(delet all folder after uninstall)
2. Install the game without install punkbuster
3. Use patch 1.1
4. Download and launch PBSETUP
5. Update pb
6. PlayI Keep getting kicked by punkbuster with some kick message about some rate what do i do?
You need to change your rate=your connection to the server, there are 2 ways to do this either go into Multiplayer Options and change it there under connetion, set it to LAN/cable/DLS.
Another way is to take down console and type /rate 25000 - then press enter.I keep getting kicked for: Unknown Soldier(or other name) (slot #??) Bad (Disallowed) Name or maby you get kicked for Empty Player Name Disallowed
Just change you name to a better name, bad names could be HITLER, HESS or other bad words or profanity.
To change name type this in console: /name NEWNAME (then press enter)I Keep geting kicked/banned from your server with this kick/ban message:
Notice: Server Disconnected - you have been permanently banned from this Game Server via PunkBuster ... GLOBAL PunkBuster GUID BAN 9aoca551
You need to change your CD-KEY in multiplayer optionsPB keep kicking me for the reason bellow:
PunkBuster Client Removing "PLAYERNAME" 5a0a (GLOBAL Punkbuster GUID BAN 50a15a0a)
Well i dont really have any 100% fix to this problem but we have a way to fix it every time it happens.
Why you get kicked for it is becasue someone with the same cd-key that you use have been cheating and got caught and banned with a hardware ban + guid ban, meaning that all other players with the same CD-Key will also be banned.
If you get banned for this you can still change your CD-Key and start playing again but then you will have to do it the correct way of you might lose your rank, follow this LINK how to change CD-KEY.
The best way to fix this problem and for it to never ever comeback is to buy the game and get a real CD-KEY.Punk Buster keeps kicking me with the following message:
Inadequate O/S Priviledges And for Ignoring MD5Tools Querries
The "Inadequate O/S Priviledges" means that you are not logged into your computer with Administration rights, and even if you are some people can still get that error follow this LINK TO HELP DOCUMENT with some diffrent solutions.I get some WARNING message about old version of punkbuster or PB Init failure
PunkBuster is designed to auto-update itself during gameplay but sometimes it dosent work correctly and you need to update yourself, there are a few diffrent ways but PBsetup is the easiest way, you can read more HERE.