Playing too much from the blinds?

[Cloodie]

I'm currently playing $25 nl and have a habit of completing the small blind or sometimes calling a raise from the big blind because I think I've got good pot odds (over 5-1). The more I've read lately though it seems that I've been making a mistake by doing this and should only really be playing premium hands, i.e. the sort I'd play UTG

My question is, are my pokertracker stats showing this up to be a major leak in my game?

From the BB I've got the following (Amount Req to post blind $178.75, Net amount -$90.12, Difference w/o blind $88.63)

From the SB I've got (Amount req to post blind $72.40, Net amount -$74.19, Difference w/o blind -$1.79).

This is after 6500 hands.