Great work karam, thank you very much for your devotion.

I have tested the whole setup on 2 virgin PR1.3 N900's
The tweaked one is day and night more responsive when heavy browsing takes place.

First I notice a difference in responsiveness with only the cgroup script but the complete set of tweaks incl Swappolube and CSSU perfectly adds to it for an all round improved user experience.

Here is a video that shows how to finally still miss a call due to too many open websites (missed call during hanging period at the end of vid)

http://www.youtube.com/watch?v=-wbu_JN8Q-k

-heavy full version websites had been left opened for hours (this is already a problem for non tweaked PR1.3's)
-still the first incoming call is coming through (great success)
-messing around with the generally responsive web windows shows it can still turn into non responsive (but then again, you could do this to the average pc as well)
-but after missing a phone call and hanging a little it graciously recovered and a game of Wagic could be played without noticeable delay and during that game a phone call could get through again.

To conclude:

the time-frame into which the phone will not be accepting incomings seems to have shortened significantly thanks to the tweaks.

Under normal use I could say that your patch brings out the very best from our "old" platform if not put to shame the dual core competition with their "for mobileTM" websites.