The script you have fetches from a different server that no longer has the files. Doesn't matter though because I just released 0.5.1.

• fix: headphone connection change will relock the screen if it was locked
• fix: screen stayslit toggle sets both gconf values
• fix: transitioning from secure keypad to secondary widget page would cause battery widget to be drawn in the upper left corner
• fix: prevent runaway focus in/out loop
• fix: moved display state code from MCE dbus signal handler to dsme message handler, MCE lies about state when blanking is paused
• fix: display notification if blanking pause is enabled when ASUI attempts to lock or blank the display
• updated asui script to download from asui.garage.maemo.org
• added 'reload' to asui convenience script
• secondary key setting used along with power button to unlock screen
• headphone connection change is treated like a power button press and screen can be unlocked with secondary key
• popup clock/battery
• new flight mode images
• widgets and secure keypad are no longer forced to redraw if the popup clock is open

Bold items are new since last test binary.

@ mcow & tso, let me know if this fixes your problems or if you still have any.