We're very serious about making sure that all files hosted on curse are virus free. If people remember a few years ago things where much different and as a result the quality and safety of our files was not nearly what they are now.
Unfortunately files do sometimes do take a while to approve, especially a night when our US moderators are asleep. We don't have many international moderators and many of them are somehow on US hours anyway.
To answer your second part of the question, there is automated packaging available from our repositories on both CurseForge and WowAce. These files bypass the queue since we're able to control the contents at the gates as it where.