A Strange Thing

I have it set to e-mail me when someone posts a comment on my blog. When I published the last post a couple minutes ago, I immediately got 3 e-mails that were comments to my blog. The comments had not shown up before, but the time stamp on them was much earlier in the day. Actually, I don't know if they were even written today, because, unless I'm missing it, there is a time stamp but no date stamp on comments. I know my e-mail has been screwy lately, but I swear the comments weren't showing up on the blog before I republished it with the last post. Has anyone else ever had that problem?

Update: I changed my comments setting so that it now has both date and time and two of them were actually written yesterday.