Hmm, I haven't upgraded in a while now (well, actually ever since I dlded LW I've never upgraded it).
You see, I have this little fear: if I DO upgrade, because I want to do it, will my incompletes be erased or sumthin'?
I've been trying to get a really elusive video for, like, ages now and would hate to see the newest version of one of my prefered apps forget what it's "ancestor" was doing.
So, speaking to the more experienced out there (or at least to those who have upgreaded at least once), tell me what to do.

I have a feeling that everything will be fine but...

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iMac G4 OSX 10.3.9
RAM 256MB
LW 4.10.5 Basic
ADSL anything from 3 to 8Mbps/around 1024kbps

"Raise your can of Beer on high
And seal your fate forever
Our best years have passed us by
The Golden Age Of Leather"
-Blue Öyster Cult-

all stays the same--the OSX installer just updates whatever files are needed. In fact, I usually have to check the About box to make sure the update is in effect.