My users have been experiencing a slow down with their different applications and I don't have the tools to analyse network traffic to pinpoint the problem. The two big problems are Exchange 2003 and our accounting software. I think both are bloated with historic data. I have avoided archiving email because of the diffiicuty managing pst files (I understand that Exchange 2010 addresses this issue). In the mean time I have seperated our accouting to operate from its own server but am still having issues. My next step is to upgrade my swithces and I want to at a 48 Port Gigabit Managed Switch with POE (so I can move to VOIP with our phone system in the future). I am on a tight budget so I am trying to steer clear of HP Procurve or Cisco and was looking at D-Link. I have always but from HP enjoying their warranty and customer service so I am a little nervous to buy a cheaper brand name. Are their any opinions on the overall problem and purchasing from D-Link? Any suggestions on a good quality swithch that doesn't com with the hefty price tag of HP or Cisco?