Are you using ExpressionEngine 2.0 yet?
I’ve spoken with a few people in the EE world regarding this and there seems to be quite a few people still developing new websites with ExpressionEngine 1.6.
EE 2.0 is now standard for all my new clients, i’ve got a couple of released websites and a few in development and so far i’ve not stumbled across too many bugs, until today.
A client who’s in the public sector is using IE6 and they are having issues with the way the admin theme displays, I’ve also noted the same issue on IE7 and it’s also not displaying the drop down menu for main items at the top, i’ll need to look to solve these.
For any of you unsure of taking the leap i’d certainly recommend it, there’s lots of little things that i love in comparison to EE 1.6 especially tabbing in the templates section!