Do I have a problem? (IInstalling games into hardrive)

So i was looking at some Xbox101 vids today, and one told me about installing games into the hardrive, which was good for a few reasons. (Quieter Xbox, less stress for the console, and loading times are quicker) I followed their advice and did it to most of my games.

Halo 3 ODST (multiplayer disk), CoD:MW 2, and Assassin's Creed 1 is amazingly quiet on my Xbox now.

Halo 3 ODST (campaign and firefight disk) and Skate 2 makes a jacked up sound. It is indeed a tad bit quieter, but makes this loud, low groaning sound, which is worse than the loud Xbox before the installation.Only those to disks do that. Is there a problem with the disks or something?

BTW all my games are new (not used) and the 360 is on this glass desk.

Well as far as I know, installing the original Halo 3 gives problems, maybe the same problems as ODST.

And installing games to the hard drive won't increase the change of a RROD, more likely to decrease.