Lots of you have provided good feedback on the 5.50 release, both here and through the feedback mailbox (click Feedback in Web Mail). Based on that feedback a few things have become obvious that we need to adjust, and we're working on that now. See the post below this one for details about the release.
The biggest thing seems to be the change to the order of the Spam and Delete buttons. People are accustomed to the Delete button being first and clicking it without looking is just automatic. We're going to put that back.
Another source of confusion is the new Forward control. The selector is a little confusing and there is no button for a one-click action to forward a message. Currently you have to click on Forward, and then make a selection for the way you want to forward the message. We're looking at what we can do to make this easier.
The other surprising thing that seems to affect quite a few users is that the updated style sheet which controls the layout of the page, sometimes isn't being automatically updated by some browsers. If the old cached copy in the browser is used (saved on your computer), the page layout is pretty messed up. This doesn't seem to occur on IE, but it is being reported by some Firefox users. We're not sure why this happens, but it is easily fixed by clearing your browser cache and refreshing the page. To do this in Firefox, click on Tools / Clear Private Data, check only the box for Cache, and click Clear. Then close the browser and reopen it. Other browsers will have a way to do this. Sometimes it will be called "Temporary Internet Files" instead of Cache, depending on the browser you use.
We're looking into how we can make sure all browsers automatically update the cached style sheet when it gets changed on the server.
We're also looking at a few other minor issues that have been reported. So thanks for all the good feedback, and keep letting us know how we're doing. We hope to have another release out very soon that addresses these issues.