I'm seeing a lot of upset Verizon Viper users, It seems that because The Verizon version of the M8 is still on 4.4.2 (instead of 4.3.3 like most versions) it is causing the newest version of Viper to take around 30 minutes to boot each time you power down your phone.
Yeah, I'm seeing that too. IMO, the Viper team burned a lot of bridges when they started requiring people to register an email to apply tweaks. I'm also not a greatest fan of their general attitude in the ROM threads. I mean, they do good work, but I had to move on to something else.
I abandoned Viper ROMs a long time ago. Yes, the developers are top notch, yes the ROMs were very smooth and stable but I was becoming overwhelmed with all the tweeks and features. I just need something simple that is smooth and stable. So far the two ROMs I like are the CleanROM for my M8 and SlimKat for my Kindle. At some point in time I'll give SlimKat a go on my M8.