Was my first ever bike, and i've had many, that had any noticeable shock issues.
There's a large roundabout on my way to work and i kept feeling as if the rear wheel was losing grip, it freaked me out for a while but i unwittingly got used to it. Bear in mind it's a commuter so i'm not chucking it about every day.
Then finally i realised it wasn't normal behaviour and on inspection saw that there was an oil leak and i'd been riding the spring without any damping qualities.
Sounds daft now, but as i said, i'd never had shock issues before so knew no different.
I was lucky at the timeas a fellow foccer had a refurbed shock going spare, which was perfect for my needs, so it was a straight swap with minimum fuss.
Once changed though i felt quite embarrassed that i hadn't realised earlier that there was an issue because the difference in riding it was huge.
I did used to frequently take passengers out for a spin quite often so that probably speeded up the demise of the shock.
That and 15w fork oil made a world of differenceto the overall feel of the bike.
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