Isn't it something how large service packs are becoming . . . remember back in the day, a typical service pack was like 12Kb, than moved up to the 3Mb and so forth.
Makes you wonder "How much" was fixed and patched, that took 100+ Mbs -- And, how much they actually tell us about.
As far as the Novell Client goes, I personally have been running the 4.7 and when I did switch to the latest 4.8x I seen multiple issues (speed being the number one impact). So I switched back. However, I did notice each of my drives that were mapped directly to a specfic folder were at least twice as quick to load, vs drives mapped to the root.