I also realised I had a really peculiar old skin on too after I had been at an event for hours in it!

Yes, there were plurk reports all over. I got 3 old IMs myself (from different people) - one of them from September even!

it still going on?ive yet to encounter those.

They were not duplicates, not mine at least. They were IMs that had never been delivered.

it's even worse if they were never delivered

I'm sure they were delivered though as one was corrections to a journalist's article which she did use

she was really surprised to have me correcting her article again a month later but thanked me very politely!

I was giving extra info before it was published the first time

I got ones I had never received from the beginning of November.

I was wearing this really peculiar skin at an event without knowing and nobody told me

It was one where I had drawn on silly thick eyebrows!