I've been having problems with the Exec PHP widget after upgrading to WordPress 2.8.
Right after upgrading, I found out that I could only have one PHP widget, adding another would disable the first... And so on.
Now, there is an update, so I was hoping this would solve this issue. It did solve the issue, but introduced another one...
When I add three widgets, and put in the code, the last widget I add will get displayed twice, even though the widgets show different code for the different widgets.
I cannot comment on the authors site, and I also wanted to make sure I'm not the only one with this problem. The upgrade to 2.8 was buggy on my end, and I've had many problems because of it. Just wanted to see if this was yet another unwanted side effect, or a problem with the plugin.