We have an FTP server in a data center and we just switched to a new network provider.
Before the switch, things were just fine.
We then switched to a new network provider in the exact same building (there are multiple companies that provide network services in that data center) and things have been very troublesome...
The speeds kept fluctuating and were at first extremely low, like fluctuating between 20 kBps and 100 kBps. Usually more like 20 kBps.
THEN- They said they changed the port speed on their router to auto-negotiate, and that improved things a lot, but we still have serious connection issues.
The speeds are now about 100-200 kBps and some people have no problems at all, but some people have a lot of trouble with proper speed and, while its unclear whose end it is on, even some supposed dropped connections.
Our VMware server, which is on the new network, is also having trouble with dropped connections.
Another thing is, maybe its just me, but the CPU seems busier than usual.