Hi Bunto,
I have not had this problem with my A200 but have found this with some cameras with built in memory and other devices. In XP I found that is was a power management issue.
You could try this;
(taken from http://support.microsoft.com/kb/871233)Disable power management of the USB hubNote If you perform the following procedure, you may also reduce the battery life on a portable computer. Use this method if method 1 does not work. To disable power management of the USB hub, follow these steps:
Click Start, click Run, type Devmgmt.msc, and then click OK. The Device Manager window opens.
Expand Universal Serial Bus controllers.
Right-click a USB Root Hub in the list, and then click Properties. The USB Root Hub Properties dialog box is displayed.
Click the Power Management tab.
Click to clear the Allow the computer to turn off this device to save power check box, and then click OK.
Repeat steps 3 through 6 for each USB Root Hub in the list.
On the Action menu, click Scan for hardware changes.
Windows XP recognizes the new device.
Close the Device Manager window.
___________________________________________________________
However I would try and mount the device in Linux first if you have a box ready with it installed.
Rgds,
Dave