Information Line

I'm not sure if this is a Firefox 2 issue only or something the crosses browsers, however, I'm having an odd formatting for the information line that comes under the post title. In a normal view I get something to the effect of:

Blog Title
meta tag ... comment info ... read more

However, on apparently random posts (although it's most frequently the first or last) I get:

Blog Title
meta tag
comment info
read more

Any ideas?