[iREZ]

I was checking out how large some software files were in my HD, when I noticed that Photoshop 7 takes around 234.7 MB, Photoshop CS took around 207.8 MB, Illustrator 10 takes around 120.6 MB, and then I checked my Illustrator CS and it came in at a whopping 357.4 MB. This seems pretty large for Illustrator but this is the first time I've ever paid attention to file size so I'm not sure if this is the norm or not, is this right?

[mitchell_pgh]

I got around the same numbers, I trashed Photoshop and Illustrator 7 a long time ago...

[arekkusu]

That is correct. Keep in mind the default install installs files you may not need. Like:
142 megs of template documents, including Japanese-specific templates.
15 megs of sample art.
40 megs of presets (brush art etc)

[dole]

These are the size of my Adobe CS folders.

Acrobat 6 - 325.5MB
GoLive CS - 160.9MB
Illustrator CS - 357.1MB
InDesign CS - 212.6MB
Photoshop CS - 207.8MB

[ryju]

Mine are as follows...

Illustrator CS: 288.6MB
Photoshop CS + ImageReady CS: 207.6MB
InDesign CS: 211.5MB

I most likely trimmed some things from each.