Mk, so not much new here, but i figure i'd share my experiences, just as a second voice or whatever.
One, mabi works perfectly with abyss.
Two, trying to launch mabi clean, makes it dead. You all covered the problems with that. I noticed that my client was still taking 30% of my cpu though, even though it technically wasn't supposed to be doing anything... Laptop has 6 GB ram though.
Three, after launching mabi with abyss, i am currently unable to close crackshield. Not even with administrator task manager privileges. Just... nothing happens. My cpu's none too fond of it either.
After the third step i tried to launch vindictus. No other nexon game in the background, but crackshield's still on. Vindictus launched just fine, i got to the log-in screen and then closed it. It didn't crash or error out, just i wasn't interested in doing anything with it.