I'm new to web development and I'm familiarizing myself with our server logs. The weird thing is, I've noticed a number of 404 errors in our server logs for pages/links that aren't broken. Is that something that just happens sometimes in the same way that every once in a while my computer disconnects from our network server, but if I reboot everything works perfectly...does it just get confused sometimes?

For example, I've got a handful of 404 responses for http://www.ourwebsitename.com/index.html over several days, but that's our home page. It's clearly up, over the same time frame we had hundreds of successful visits.

I went to the referring page and the link works fine from there too, I can't get it to replicate the error that it shows in the server logs.

Does this make sense?

Thanks.