I've never had this problem with my character Vrebel even after the switch to Linux. I just tried today using whirlwind attack on gnolls in the ire mountains, bugbears on Dalanthar and the vampires in the same area in the sinister forest. wiki says that this problem occurs if you are fighting exactly three creatures and running linux or mac. I tried all three above creatures in sets of three and had no freeze ups.
It does take up a full round to perform whirlwind attack (and you have to wait for the creatures to get there attacks in) so there is a long wait inbetween attacks but I've never had a freeze.
Hope this helps, guess just watch out for groups of three!