I know this has been addressed and it seems the upcoming patch will fix but soloing vs a decent group is broken,
The slowing effects stacking ruins any chance anyone except for a mage(another problem for another thread) has of defeating a decent group.
I know the current patch uses a new calc that will prevent most 4-5 vs 1 but I dont think that is necessarily the answer.

i agree the combination of shout and holy roller stacking u will find yourself stuck in one place unable to attack.. mage or not u are dead..even if u use light in the loafers all they have to do is holy roller u and shout u again. not really an escape from it..however good team work in a grp u will find it hard to win regardless..personally i would still like to be able to continue to fight 5 man grps the wait time with new patch will take forever to get a battle..until there is more incentive to compete in pvp