I've been with DH since 1998 when I setup ringtone.net. I've never had performance issues and I've gradually been adding domains and sub domains, mysql database etc with no problems (and been really happy). Ringtone.net was a very busy site back in the late 90s and early 00s but I switched it to a static page in 2004. Have had other projects including SevernFM a radio station in Gloucester UK. I added the domain using Concrete 5 to my growing list in 2011 and all has been well - Until DH moved my shared accounts to barrow. Severn FM was taking a good 15 seconds+ to load and it took DH a good 3 days to respond and let me know that my mysql database and site we in different data centres and they were going to collocate them. This fix did improve things but all of my sites were slow - except the static ones. I've had some good advice from DH support and in the end I went for a VPS. I was gobsmacked at how much memory my (hobby sites as they are now) are using. 900Mb total memory when these are just really low traffic websites. If I reboot the server then the memory goes back to less than a 100Mb and gradually creeps up of over the next week.