Same here.  However a few more details might help...

* Before BIOS update the touchpad was working correctly, but
occasionally would stop working for small periods of time (a known
problem and solved by the A08 BIOS upgrade.)

* Immediately after the upgrade the touchpad worked fine, but at 1/10
speed.  I noticed this exact problem on my other laptop (Dell D610 as
well on installation of Hardy beta, if that helps in any way.)

* Increasing the sensitivity to full still wasn't sufficient to get it
to respond correctly, and it would occasionally (not sure what the
trigger was) start acting erratically (as described -- completely random
movement and clicks.)

* Manually changing the driver (suggestion from one forum online) to
alps didn't have any effect (if anything it made it worse -- permanently
erratic behaviour, except during the initial stages of the login
screen.)

Will be trying the LiveCD to see if either the super-slow or erratic
behavior is happening after booting from that.

Let me know if you need any more information.

-- 
Touchpad jumps, clicks randomly after lid close/open
https://bugs.launchpad.net/bugs/209605
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