I took Accutane for about 13 years, and I've never had any neurologic or cardiac problems (before, during, or after Accutane).
The alcohol and Accutane issue seems to have become a bit confusing and a bit of a hot topic around here lately. I also remember seeing warnings in the literature years ago, when I was taking it, but it's clearly been removed from the current product literature on Accutane. In today's litigious society, I can't believe that Roche would remove any kind of warning if it was at all necessary. I've also not heard anything about Accutane deposits in the liver or brain.