What is the difference between the two versions for Mac Classic?

One is a 12.1 MB file and the other is an 8.1 MB file which says "No VM" (does this mean you are not running virtual memory?).

I have a B&W G3/350 and am running OS 9.2.2 with 832MB of memory, is one version preferable to the other? I've used both versions and in the "about Limewire" scrolling message they both say "version 4.0.7". IS there an actual 4.0.8 version ? It seems like the 12.1 MB version runs slower on my machine but that may be subjective. I've actually gone back to the free version of Limewire as it seemed to run better.

Thanks