WotLK Auction house bug

[globoforum]

sometimes when i list an item on the auction house , the value of the stack size is multiplied with the sell amount.
for example , i sell a stack of 20 pieces of leather for 6 gold , but the auction price becomes 120 gold (20 x 6).

other times the bid price and the buyout price are multiplied with 10

and other times the bid price is not changed but the buyout price changes.

This does not happen for everything though , it seems random.

Any ideas what is going on there ?