My iPhone affected by this virus 'Ikee' since yesterday. After i google it, i found this might helpful to iPhone jailbroken user.

• This is the first virus for the iPhone.
• Some Aussie dude named Ashley created this virus as a proof-of-concept (what an ass).
• It only affects jailbroken phones.
• Symptoms: your iPhone wallpaper changes to show a picture of Rick Astley, accompanied by the text Ikee is never gonna give you up.
• There are 4 variants of the Ikee virus as of this moment – all of which can be removed with a bit of effort.
  

Steps to remove the Ikee virus (variant A, B, C & D)

1. If you haven’t already installed mobile terminal via Cydia, do so.
2. Reboot your iPhone.
3. Run mobile terminal, and at the prompt, type su.
4. The default password is alpine (unless you’ve already changed it).
5. Type in the following commands one line at a time, end press return after each line.
   You may get messages such as No such file or directory – but that’s fine, different variants may leave behind different files.

   rm /bin/poc-bbot
   rm /bin/sshpass
   rm /System/Library/LaunchDaemons/com.ikey.bbot.plist
   rm /var/lock/bbot.lock
   rm /var/log/youcanbeclosertogod.jpg
   rm /var/mobile/Library/LockBackground.jpg
   rm /System/Library/LaunchDaemons/com.saurik.Cydia.Startup.plist
   rm /usr/libexec/cydia/startup
   rm /usr/libexec/cydia/startup-helper
   rm /usr/libexec/cydia/startup.so

6. When you’re done, reboot your iPhone.
7. Now, change your wallpaper to something cool. You should be free of Rick’s ghost now.
8. Follow the steps below to prevent getting hacked again.

Steps to change your iPhone root password (and minimize being hacked)

1. Start mobile terminal (download and install via Cydia if you haven’t done so yet).
2. Type su.
3. Enter alpine as the password.
4. At the prompt, type passwd.
5. Enter your new root password. DO NOT FORGET THIS!
6. Enter the same password again.
7. You should now be secure from viruses that use the default password to hack into your phone.

Source: The Backpackr

Finally got my Iphone 3Gs 16G from Maxis two weeks ago after waiting for a month.