I'm seeing a number of issues after updating to 2.3. At this rate I'm tempted to just have tech support "watch" on a screen share because the list keeps growing. Here is what I've observed this morning:
1. Opening and save times seem to be very slow. I have observed an opening time of over 3 minutes for a project with two simple layouts open. I haven't recorded how long things are taking to save, but its definitely longer than before the update. I have been opening my project frequently - see item #3 below.
2. When I save my project the spinning circle disappears and I don't know when the save is complete. This seems intermittent. The circle appears when I first open a project and save but after that sometimes it disappears and other times it works as it should.
3. Crashes. I have experienced 3 crashes in 2.5 hours of work time. I looked for .dmp reports in the usual place but there are none.
4 Geo-processing. I have only used the Clip tool but it seemed to take quite a while, (several seconds), for the tool to open. ArcMap Clip opens much faster.
5. Legend. When I move the legend on my layout it jumps back to the original location on the first attempt. The second time I move it, it moves correctly