Moved to a new host last week - having run the same site elsewhere for 12 months with no problems.
After having the forums online for less than 1 hour my URL was closed and the following message sent in response to my asking why:
"Your Forum when enabled causes the CPU cycle to rise to 100% per thread that is viewed. Meaning anytime someone clicks a link within the forum the CPU rises to 100% to parse the information. The database size coupled with the concurrent users causes this to occur. Thus this is unacceptable on our shared servers. You can not have one site consistently using all the servers resources. You need a dedicated server if you wish to use all the resources of the server not shared hosting. Snits has allot of features but was not designed efficiently for performance."
Im using a MS Access db (3Mb) and maybe have 100 users maximum - no way of knowing how many concurrent users.
Most of the people who's hosts have had this complaint have come to find that their host does not have all the service packs installed correctly or in the right order. There are numerous posts from people throughout the forum where this ended up being the root cause.
Dave Maxwell -------------- Proud to be a "World Class" Knucklehead