Now, I don't know if this has been happening for anyone else, but I've had various issues with TelstraClear and DNS (and their proxy too for that matter) for quite some time.

Our router is operating on 203.97.78.43 and 203.97.78.44 DNS addresses — but we've been experiencing a lot of time outs and webpage elements not loading on a range of websites.
Notably: google.com, plus.google.com (elements not loading), tumblr.

For the last couple of days, navigating to plus.google.com has caused all other http traffic to simply come to a stand still for a few minutes at least. The issue comes and goes, but currently no issues running on Open DNS (208.67.222.222).

Curious issues... TelstraClear are quite disappointing at engaging on Twitter, unless it's self promotion.