Hi, I live in Linthorpe and you're right - asking prices don't seem to be dropping at all but equally - nothing is selling. The couple that have sold near me have gone for significantly less than the peak for the road though. Peak seemed to be about 125k-130k (3 bed end terrace/semi). A similar house but 2 bed and 'in need of renovation' has just gone for 90k.
edit: I lie, it went for 77.5k - if it's the one I'm thinking of it was in a real state though. I'll check it tonight.