Ubuntu Installation :: Can't Install 11.04 From USB Stick

I am trying to clean install from a USB stick onto an Acer Aspire One ZG5.

Here are the steps I have followed:
- Downloaded ubuntu-11.04-desktop-i386.iso from [url]
- Downloaded Universal-USB-Installer-1.8.5.3.exe from [url]and run it
- Selected 11.04 in USB Installer, pointed to ISO, left persistence at 0MB and run it on a freshly FAT32 formatted USB stick

When the Aspire One boots from the USB stick, it displays "SYSLINUX 4.04 EDD 2011-04-18 Copyright (C) 1994-2011 H. Peter Anvin et al", followed by a flashing cursor on the next line.

1) I cannot type anything (read on some forums that typing "help" should work, but I cannot)
2) MD5 check of ISO is correct
3) I have also tried using unetbootin-win-549.exe to create the bootable stick, but the result is the same (although slightly older version of SYSLINUX)