I'll try to shed some light on this:
There's indeed a problem with 1.41 but it is very limited in scope. The only people who should have problems with it are those upgrading from 1.4 to 1.41 and using savegames from 1.4 (So with savegames prior to 1.4 you should still be ok).
What happened is that there is a problem with the code that upgrades the savegames from 1.4 to 1.41. We're working on fixing it and will release 1.42 asap. The problem is caused by the merchants regenerating their inventories, something that was introduced in 1.4 (but with a bug) and which is solved in 1.41. But as I said, there was a problem with the upgrade code. So 1.4 and 1.41 are flawed. 1.41 is only flawed though for using it with savegames made in 1.4.
Summarized:
If you start a new game with 1.41 you shouldn't have any big problems.
If you upgrade a game from 1.1.,1.2 or 1.3 to 1.41 you shouldn't have any big problems either.
If you want to be absolutely sure that all is ok, wait for 1.42 which we are trying to get out of the door today. That should take care of all problems.
Needless to say we are very embarassed by this all and deeply apologize.
Lar