Hi,
I just compiled 3857851e on Linux-64 and when I load my savegame (pak-britain with a couple of changes) the revenue changes drastically. The behaviour is reproducable with a savegame and shows up pretty much immediately. There was ~10k stored up passengers/mail at Manchester central but that was recent and after a couple of months of play the monthly profit is more than the yearly profit with a02241a5. Happy to bisect if you wish.
I've attached the one non-standard object I use (it's from openpak). Beyond this I only changed the 60s or 70s bus stop for 64 people to be people&mail; and two of the highest level train stations to be 128 passengers instead of the 60 or whatever it was.
http://simutrans-germany.com/files/upload/c1972c_before_switch_to_dec6.sve
Steffen,
thank you for the report, and apologies for not having replied earlier: I have been exceptionally busy these last few weeks. I confirm that I can reproduce excessive revenues on long passenger rail lines compared with earlier saves, but that other transport seems unaffected. I shall look into this and try to fix it. Thank you very much indeed for testing the new version.
I have now found and fixed the problem - the fix is on the "running powers" branch. Could you re-test?
Edit: I have now merged the running powers branch into the 10.x branch in preparation for release.