What are the specs of your computer/system (e.g. cpu, memory, OS, internet connection, etc)? Are you running any apps at the same time?

I have a 2.4 gHz p4, 80Gig SATA 7200rpm HD, w/ 512 ram on cable ISP & have never had a problem w/ LW unless I got to the point where my HD was nearly full & Windoze (XP) virtual memory manager was struggling for space. At those points I had to free up some real estate on the HD. I've been so short on space that defrag wouldn't run...so I cleared my temp folders, emptied what I could, & it helped. Sometimes we forget that our HD space & speed will effect software. I noticed improvement after I burn/backup files & free up space.

If your HD is low on space & virtual memory is cramped it will affect performance.

PS: I'm hoping that two 500Gig SATA HDs are under the tree Sunday!!