You're supposed to use a computer mouse, not a live kangaroo mouse.
This kind:
Not this kind:
Seriously though, according to Razer support, you do this:
PROBLEM:
My mouse cursor jumps, or I sometimes end up looking in the wrong direction in an FPS game.
SOLUTION:
If you're experiencing cursor jump issues,
1) The first course of action is to download the latest v1.64 firmware and update the mouse.
2) If the jumps still persist, try cleaning the sensor lens with a Q-tip and some alcohol, leave it to dry for 5mins and try again. Please use Isopropyl Rubbing Alcohol 99% for this purpose, you do not want to use Rubbing alcohol that contains ethanol. Isopropyl Alcohol 99% or 100% pure is commonly found in most all drug stores and medicine cabinets. Further cleaning can be obtained by using some "air in a can" or "canned air" to blow out any dust on and around the sensor assembly.
3) Also try and remove the silver-colored sticker surrounding the opening of the sensor.
If you've done all the above steps and continue to have jumps, please submit a support ticket online with the following info prepared which will aid us in further investigations:
1) Describe the motion (if any) when you experience a cursor jump. (e.g. moving slowly, drawing circles, etc)
2) Describe the mousepad that you're using. (e.g. Hard/Soft/Hybrid)
3) Does the cursor jump happen when you click the mouse or apply force to the top of the mouse?
Also, it appears the Razer site got hacked, check this out:
Update 23nd September 2009: Razer was alerted of an malicious attack to our support site this past weekend (19th September) by a malware virus or Trojan. We had earlier taken down the support page and software links to ensure all issues were resolved. If you have downloaded and installed drivers or firmware from
www.razersupport.com between September 19-22 it is highly recommend that you... etc.
http://www.razersupport.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=133&nav=0,16
Hope you didn't download the driver this last weekend dude.