I have been developing a feed reader application on the latest Whidbey CTP since it came out. I was developing it on Beta 2 before that, but gladly upgraded to get around really bad designer problems. While the July CTP comes out tomorrow, I wasn't going to install it because it took me a very long time getting the June CTP up and running with Yukon. It looks like my hand is forced now though because the June CTP is having serious problems.
The June CTP is taking up 360Mb of memory and most of the CPU, and that is without really doing anything. Running the application is incredibly slow and debugging it is even worse. For example, it is taking 15 seconds to step over a Try statement (not the block, just the opening Try statement so no, it's not just my poor performing code [:)]). Also, when I try to close the IDE, it takes up the system resources and doesn't close (digging in its heels like an application that knows it's about to be upgraded).
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