My xref window is taking way too long to open, but only the first time after launching the program. My machine specs are pretty high (multi-core i7, 12GB RAM, Win7x64, etc). To get some metrics for comparison - looks like AutoCAD starts up within 10 seconds or so, but the first time I open the xref panel it is about 45 seconds. If I close the xref window and reopen it, the panel opens immediately. Restart AutoCAD and it takes forever again.
Recently installed 2013 and thought this was just a 2013 issue, but it looks like my 2012 is having the same problem. One of the other users here had this issue the other day - it took long enough on his 2013 install that he thought it had froze and killed it a couple times. His 2012 seemed to work fine. All AutoCAD MEP installs by the way.
Anyone seen this before? All my searches seemed to come back talking about problems about large xref'ed files, this even happens in our template file (no xrefs attached). Seems to be independent of what drawing is open as well.