It's an updated touch screen driver for Linux models.
After the hibernation mode, the touch screen didn't work properly sometimes.

Please visit as below link and download the driver.
http://code.google.com/p/wibrain-b1l/downloads/detail?name=wbts-modules-2.6.22-14-generic_1.0-1_i386.deb&can=2&q=

How to install the driver.
- Download "wbts-modules-2.6.22-14-generic_1.0-1_i386.deb" file on the product.
- On the taskbar, go to "Places" -> "Home Folder" and search the downloaded file.
- Execute the file by clicking "Install Package".
- There might be a window pop-up that asks "Root Password". In that case type the password on it.
- You can see the "installation finished" message if you finish the installation correctly.