The reason for this is not a problem with the Showtimes software per se. The problem is that this information does not work totally well at all times, thereby creating some difficulties for Showtimes to download updated data.
Showtimes is a very handy program for retrieving local movie listings and timings.
It allows you to sort movies either by name, or cinema. Once you've installed Showtimes, you only need HotSync to download the information into your Palm. The following instructions are for Windows Users, and is intended for Palm users in Singapore. If you're from the States, go here instead. Unzip this file, and run setup.exe.