And, although here's still no v3.2.5 (but it will be

), I must say that it is really much more optimized, server load is noticeable, but bearable.
Now I have 25 posts per page, with older versions I needed to lower it to 10 posts per page to "neutralize" server load, now I think that even 20 posts per page would be fine, in worse case 15 posts per page would give even some advantage (of course, compared with server load with 25 posts per page).
Just to mention, I tested vBSEO's likes, they produced even bigger server load than
older versions. Didn't tested Abe's thanks hack though.
So, this version (3.2.5) is very big step forward server load wise.