Washing Machine smell (by 4 users)

I have a Hotpoint WMA 38, about 4 years old - same problem! I have tried bleach washed, vinegar washes, boiling washes, cleaned the drains ad the filter ...

Nothing has really worked, but my local repair man suggested a way to keep it at bay: use about a cup of washing soda (I'm British, nit sure what that is in the states?) in the machine. Set at 60 degree wash. Let it fill, then add more water with a jug or hose into the soap dispenser until as high as you can before it starts to drain. Let is wash and heat. When the door feels hot, swicth it off and leave all night (or all day ...). Complete the wash cycle. Wash out the seals with the same washing soda mixture. Do it again. And again. And again - it took 4 lots before mine smelt A LOT better. I have to do this regularly - once a fortnight or so.

I wondered whether my using eco-friendly products and low temperatures is making this worse? Home repair man thought maybe so. Any ideas? And why don't everyone's washing machines smell? I do a load pretty much every day and this is beginning to really get to me ...

Tia

Our laundry smells as if we left it wet for weeks even if it is immediately put into the dryer. I have no idea how to fix this.

We have a samsung washing machine (about 2 years old) and I have noticed an odor as well over the last 6 months or so. We too have tried everything to get rid of it but cannot tell where it is coming from. I have checked with the people at Lowes where we bought the machine and they have no idea what it could be or what Im talking about. Any ideas? We have tried to clean the hoses, washed out the water supply line and ran bleach through the machine and checked out the filter.