I had exactly the same problem as you, and as i found out via extensive searching on the internet, the problem is down to 2 things - power management settings - bluetooth interference Firstly, make sure in your advanced power settings that wifi use is on maximum performance on battery and on plug in. Now the real error. DELL have yet to confirm or deny there is an error with the Intel Wireless N 1030. The issue comes with bluetooth interference from the module. Go into device manager and disable the bluetooth and your internet should work fine. Thats what was my problem! Hope this helps
Four weeks ago I bought a Dell Vostro 3550 notebook to use it at home. I conntected it via my wireless accesspoint to get access to data on my NAS, which is within my home network.Then I noticed that the connection is not stable, although the computer says "excellent signal". Whenever I access files via explorer on the NAS I loose connection from time to time and the reaction time is very slow (sometimes I have to wait seconds).During search for the reason I pinged directly the access point and saw unacceptable slow response with large variation. I checked the connection with an other computer (running XP), using same position. There it works fine (see below) - stable connection.It seems that the configuration of the access point does not work well with the configuration of the Dell computer - or an hardware fault on the Vostro. Below are the test data and my configuration. Any suggestion? Leo --------------- testdata> ping Vostro -> accesspointPinging 192.168.2.120 with 32 bytes of data:....Ping statistics for 192.168.2.120:       Packets: Sent = 30, Received = 21, Lost = 9 (30% loss),Approximate round trip times in milli-seconds:       Minimum = 1ms, Maximum = 2439ms, Average = 348ms > ping OtherComputer -> accesspointPinging 192.168.2.120 with 32 bytes of data:....Ping statistics for 192.168.2.120:       Packets: Sent = 30, Received = 30, Lost = 0 (0% loss),Approximate round trip times in milli-seconds:       Minimum = 0ms, Maximum = 17ms, Average = 2ms AccessPoint-----------Trendnet TEW-670APDual Band Wireless N Access PointFirmware version 1.0.2 (newest/initial)IP address 192.168.2.120 Wireless 2.4 GHz SettingsSecurity WPA2 pre-shared keyAssossiated Clients 0Radio            : EnableMode             : APBand             : 2.4 GHz (802.11b/g/n)Enabled SSID#    : 1Auto Channel     : DisableChannel          : 11Channel Bandwith : Auto 20/40 MHzPreamble Type    : Short PreambleCTS Protection   : AutoTx Power         : 100%WPS              : EnableCommunication between Wireless clients : Enable Wireless 5 GHz SettingsSecurity WPA2 pre-shared keyAssossiated Clients 0...Configuration LAN802.1d Spanning Tree : DisabledDHCP Server          : Disabled DELL----Dell Vostro 3550OS: Windows 7 Professional, Service Pack 1, 64 bit (German) Intel(R) Centrino(R) Wireless-N 1030, Treiberversion 14.0.1.2801.11n Kanalbreite für Band 2.4 : 20 MHz802.11n Modus                    : AktiviertAd-Hoc QoS-Modus                 : WMM deactivatedAd-Hoc-Kanal 802.11b/g           : 1Drahtloser Modus                 : 3. 802.11b/gFat Kanal intolerant             : DeactiviertRoaming-Dynamic                  : 3. MittelSchutz f. gemischte Umgebung     : 'CTF-to-self' aktiviertÜbertragungsleistung             : 5. Am höchsten OTHERCOMPUTER-------------OS: Win XP Professional, Version 2002, Service Pack 3 Atheros AR9287 Wireless Network AdapterPCI bus 16, device 0, function 0802.11b Preamble           : long and shortMap Registers              : 256Network Address            : disablePower Save Legacy Algorithm: PS non PollPower Save Mode            : NormalMFP                        : disableRadion On/Off              : OnRoaming Policy             : normalScan Valid Interval        : 60    
Slow wireless connection with Vostro