Are you running bear, tree, 3x boomkin?

The bosses in SL can be a problem. The AoE fear of the 1st boss is a royal pain for some groups but you should be able to burn the boss down pretty quickly and shouldn't get hit with the fear more than once or twice.

The 2nd boss is different for every class combo. It is a long fight and your group will get spread around his entire room. Just getting everyone in range and facing him uses up valuable time that could have been used to DPS. He doesn't hit very hard so the fight is more about regrouping between "FUN!" phases.

The 3rd boss is not too tough. Need a bit of kiting but easily manageable.

Final boss is only a problem if you have melee dps.