As part of our effort to expand system capacity, your account now has the ability to utilize additional profiles. The total number of profiles enabled is: 10

wohoo :) Thank you Google

Same here. Although I'd much prefer 5 completely reliable site profiles than 10 not-so reliable profiles with reports missing data...

Yeap. Anyone knows how to merge two accounts without losing data?

Tony are you sure your data is lost? I had some dates without data, but they go filled a little after

Piotr same probleme here :) and the help sections does not help

Corsin:
Yep – the data I posted about here is still missing:
http://blogoscoped.com/forum/46917.html

Corsin/Piotr:
AFAIK it's not possible to merge accounts because the tracking code contains your unique account ID. The only solution is to link your accounts – as you already know – by adding an Administrator user (i.e. your other account) via Access Manager. (You could then remove the original account's access if you wanted to but that doesn't really achieve anything.)

Sure, but the problem is, the linked accounts do not show up in Google AdWords and I have not found a way to link them there.