Not at all, anope will only ever create a new file in the runtime folder when a module is loaded - this is usually the case at startup when all modules are loaded for you.
In a pretty default configuration anope will create about 5.5 meg in the runtime folder when you run it (figure taken from anope's irc network services)
With this in mind, If you've managed to get to 84 gig in 30 days from a clean start, you must be re-starting anope around 478 times a day, each day, for a whole month. This would lead me to believe there are more problems involved here.
If possible can you provide a list of modules you use, your current services uptime and if you still have it, the reason for your last services shutdown? (it may well be in your old services log files)
On top of that, since this case is so extreme, would you be able to monitor the folder size on a daily basis (in your example case a hourly basis should show noticable changes in folder size) along with the logfile entries for that period? so we can see what is going on?
