jakkedup -- Our business requires availability data over the past year (which is how long we have running any version of nagios). I'm not sure where specifically "two months" would come into play. Out of the box, the CGIs will allow availability data analysis over the past two years.
SonOfThunder -- Yes, I've certainly reviewed the logs in detail, and there are a number of differences in both content and formatting. Without digging through the source of the CGIs, though, I'm not certain how much of that I'd have to change for the v2 CGIs to parse the v1 data, which is what brings me to asking my question here.
jakkedup -- Permissions, ownership and file naming are consistant between old and new log archives.
I'm certain I could slog through the process of figuring out how to munge the files myself, but it seems silly to re-invent the wheel if someone else has already does this -- which brings me back to my basic question of what others have done for availablity reporting when they upgrade from v1 to v2.
Thanks - Chuck