Check out the "Beta Versio[n] Slow" thread, as in exploring the SQL Issue discussed here, we may have come up with a possible explanation - too many messages in the Amazing Charts inbox.
Since V5, with the CCHIT mandated orders tracking features, messages are read into the computers memory more frequently. Practices that have a ton of messages may experience a significant delay in loading these messages. We hypothesize that this may allow the SQL Server connection to time-out, and thus appear as a dropped connection.
This doesn't explain all instances we've seen, but it may explain some - so we recommend deleting old messages from your inbox, and/or saving patient-related messages to the patient's chart. This could alleviate the issue. (One of our users having serious slow down and dropped issues has over 7000 messages in their inbox.)
Also, we have found in some instances that complex networking setups(such as Terminal Services), may be part of the issue with SQL Server dropped connections. Keep in mind that Amazing Charts is designed for small practices (1-5 providers) on standard off-the shelf computers and peer-to-peer common networks. The more complex and expensive IT-related set ups that are introduced, the more potential variables and complexities that have not been anticipated or tested will occur. And while we look into each and every issue that we learn about, answers and solutions will not happen overnight. Again, we recommend you stick with peer-to-peer networks on off-the-shelf computers +/- a server for practices with > 3 providers.
Jon