Anyone noticed the enormous HDD footprint? My Chrome folder is 672MB and cache folder is 386MB! For comparison: Mozilla HDD foot print is total of ~50MB.

[application] - 4.0.223.11 only - 90MB (minus installer 35MB so 55MB)
[user data] - 90 MB

Chromium 4.0.233.0 (30873);

[application] 82MB - 41MB installer = 41MB
[user data] = 38.4MB (so far)

There's no cap on the cache yet I guess? I tend to clear it every couple of days anyway, so not an issue really. A setting in Options would be useful though.

I've cleaned the cache but it's still 200+ MB.

Chrome always keeps the previous version in the application folder also...
You can just remove that by deleting it.
That will make a +/- 75Mb difference

You can set CCleaner to clean out any specified folders you wish, as well as all the usual accumulated Windows junk (assuming you're on Windows). I set it to clean out various application cache and temp folders - a couple of clicks twice a week and all's fine and dandy.