oh dear - i've upgraded to 10.5 & now my Palm TX is non-syncable.... and i *may* have to wait as long as 3 months!! for a fix, according to Mark Space...
and i don't even want to think about how long it might be before Palm get anything that will work with 10.5....
I have to say, that it is unreasonable to have to wait for 3 months -- this is why Apple have a Developer Connection (ADC) - so that developers can get access to pre-release Builds of Apple products / OSes....