[mad=dog]

The one class that have been nerfed HLA wise is Bards in my opinion. Lets take them in a row:

Use All Items: The one thing that can justify itself. Still it's designed for thieves. Bards can already use wands, scrolls and so forth.
Evasion+Greater Evasion: Also nice, but seriously not that powerful after all.
Avoid Death: Also somewhat useful, but not the kind of thing you really need. Get some spell deflection/absorbtion up. You are a bard.
Improved traps: And why on earth do Bards get that!
Magical flute: Yep. Nice little thing.
Assasination: According to the manual. Get the backstab multiplier on the next attack. Woooo. Bards don't have any bs modifier.
Enhanced Bard Song: Nice with a party. I solo.
Scribe scrolls & Alchemy: Utterly useless.

Things that would have made sense for a Bard:
Spell mastery: The bard gets spell progression in a subset of level 7 spells
Increased spell mastery: The bard gets spell progression in a subset of level 8 spells
Recharge wands: The bard can add 5 charges to a given wand by deceasing his/her constitution by 2 for 5 turns.
I am sure we could figure out more pretty quickly.

They have just duplicated the thief HLA's and thrown in a few things for good measure.