Actually,Reading the changelog, it appears this RWRRRWRrrWRW thing has been in since version 1.5-beta8:
"* Modified the diagnostic --verb 5 debugging level to print 'R' for TCP/UDP read, 'W' for TCP/UDP write, 'r' for TUN/TAP read, and 'w' for TUN/TAP write."Not sure why I never noticed it before, anyway sorry for the inaccurate information...
Mike 5:)