Hello Pondini,
I have checked your pages but have not been able to find the answer to my problem.
Since I upgraded to Lion more than a week ago, my computer is significantly slower (slower startup, slower opening of programs, slower switching from one program to another). It seemed a bit better after spotlight completed indexing of the computer, but it's still very slow now.
It's a MacBook Pro beginning of 2008 (I have 2GB of RAM, maybe that's not enough, but from the posts that I have seen, people seem to be running lion easily with 2GB...). I did not do a clean install but installed over Snow Leopard which was the original OS that was on the hard disk (which I had to replace probably 2 years ago).
Anyway, the only flagrant abnormal behaviour I can see as a non IT specialist is never ending time machine indexing of the backup (on an external HD almost continuously connected via USB) which I never had under Snow Leopard. I had the vague impression that Lion was faster when there was no backup / TM indexing under way, but I am not sure since I also had slower behaviour without the disk being connected.
Backup does complete after a long time (sometimes before the new hourly backup, sometimes not), however.
I checked the integrity of my backup disk with disk utility and it "appears to be OK".
Anyway, my questions are
(1) Could the indexing be responsible for slow Lion?
(2) Is there anything I can (or should) do about it?
Thanks already for your wisdom :-)