Just to share my experience so far with titans kernel, may be of help to some!

At first was using titans ideal settings at 500-800. I was having problems with the dsp when cpu was clocking down with the media player refusing to play videos. After some fiddling with voltages i managed to get it to work but found it slightly unstable.

I decided to give his xlv settings a go and this worked faultlessly up to 950Mhz with 500Mhz minimum. At 1000 i encountered problems when booting, kept freezing on second set of dots (after where boot video plays) :S so went to 950Mhz with no problems.

Would highly reccommend changing the transitions.ini file also, as this made the n900 very fast. This can be found elsewhere on the forums.

However the battery life was bugging me MASSIVE amounts. Had approximately 6 hours use from medium useage so went on a battery saving mission. I did the following mods and have seen a significant increase in battery life (approx 40%). This is the bit that may be useful!

Firstly i installed the simple brightness applet and usually found 2/5 brightness acceptable. App is useful for on the go change of brightness when required.

I found the AutoDisconnect app very useful, disconnecting the 3G connection when not in use.

Also from others advice on the forums changed the minimum frequency to 250Mhz which seems completely stable for me.

I enabled 'ignore nice load' in the kernel settings and changed the 'up threshold' to 95 and sampling rate to 350000. I beleive this means the processor will change frequency less and only under heavy load, increasing battery life.

Very pleased so far and would like to thank titan for the great work.