Ubuntu 10.10 installation freezes

Hi,
I have downloaded the Ubuntu 10.10 netbook editon and created a bootable usbstick following the instructions on the ubuntu site. I can boot from the stick and use the live version without any troubles.

However i can't install the OS both from live or from the boot menu.
When i start the install it starts with the screen suggesting to plug in power, connect to internet etc
I do all those things and click forward.
At that point the mouse cursor changes to busy (the rolling circle), but nothing happens. I see once or twice some activity on my harddisk and after that it stays still. Nothing happens. I have waited for 1 hour, but still nothing happens.

The install program doesn't freeze because i can end it and shut the system properly down.
On the hard disk i have a recovery partion, a system partition, a windows partition and 35 GB of non partitioned space where i want to get my ubuntu.

Any idea or suggestions how i can fix this problem ?
I also tried the 64 bits desktop version and it has the same problem.
Both images verified with md5 checksum and are ok.

My hardware is a acer aspire as 3410-743G