I'm experiencing an usual problem with XF addon installs/upgrades which has become much more pronounced since switching to a Windows 2012 server. The rebuilding/reparsing stage can easily take over an hour per site, even when the site load is extremely low (the server is plenty powerful - Dual Hex Core Xeon 2620, 32GB Ram, RAID 1 SSDs, etc...). We're only running 1 style and anywhere from 6-20 addons per site. This problem happens on all XF installations, but the number of addons does seem to make a difference. Has anyone experienced unusually slow rebuilds or know where I can look in to where the delays are coming from? I've had a look at the MySQL monitor and the load barely moves, but I don't know where else to start searching.