Is there anyone who can help me with this?

Major pressure from my boss to figure this out. :-/

You probably have a lot of stats. Lower the number of days to store on Global settings > Features tab

Thanks for replying!

We recently lowered from 30 days to 15.

Could it be anything else? This isn't just happening when we view stats--also (at times) when we post...and just move around in general on the back end.

But, like I said, front end is fine.

Have you checked error logs? Also if it's a VPS or a dedicated server, check the load.

I did check the error logs and not sure if this is significant--most were "file does not exist" but the file sought was robots.txt most of the time.

Didn't see anything else stand out there.

We are using VPS--just upgraded--load is ok--though after we upgraded, we have experienced an increase in visits and "hits"--and bandwidth usage has increased (like, as of today, we are about halfway to where we were for the whole month of May).

It looks like a slow server then.
Open 'top' and see if mysql is eating 100% CPU while you are browsing through b2evo control panel.