Frustrating Blogging Problem

For some reason whilst I am able to blog and reply on my own blog the system doesn’t seem to let me comment on anybody else’s blog. Has anybody else had this problem ? When I am in my blog it shows my name and picture but in your blogs it appears blank ? Any ideas.

This is a completely unrelated picture but shows how nice the weather was in the Lake District this weekend 😀 answers on the technology problem would be much appreciated as I am struggling to sort it out ?