If you leave LW running for a long time with OS 10.3, the virtual memory can climb and lw responsiveness gets very slow.

We've been hoping Apple will fixthis for a long time, but I've stopped waiting.

Here are some workarounds that might help:

quit LW every few days, shutdown the machine for 2 minutes to clear the memory, restart holding down the shift key, and restart again.

make more room on the hard drive (try to keep 10% free).