Wireless internet connection with iBooks not working..

I have Comcast Internet and a Linksys router. My PC (non-Apple) connects perfectly to the Internet. I have tried over and over to connect 3 different laptops (1 iBook G3, 1 iBook G4 and 1 PowerBook G4) to the Internet and NOTHING works. The laptops can sometimes see our Wireless in the list of networks, but can never connect to it. At one point during an attempt with Linksys to get it working, none of the laptops were successful in establishing a "ping". I have reached the point where Linksys and Comcast both say they cannot help me anymore. Any suggestions on what to do?

I have Comcast and a Linksys BEFW11S4 V4.0 and it works fine using WPA encryption. Could you tell me the router model you have? Click the link below for the Linksys website.
http://www.linksys.com/servlet/Satellite?childpagename=US%2FLayout&packedargs=c% 3DLProductC1%26cid%3D1115416939789&pagename=Linksys%2FCommon%2FVisitorWrapper

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I'm having trouble getting access to the internet with my ArchLinux laptop and a F@st 3464 router via wireless (WEP). On the other hand, a winxp laptop and the n900 running maemo 5 have no problem to problem to get an internet connection.
My ArchLinux laptop is configured to connect to my home wireless network:
# /etc/rc.conf - Main Configuration for Arch Linux
wlan_eth1="eth1 essid MyWifi key s:XXXXXXXXXXX"
eth1="dhcp"
INTERFACES=(eth1)
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### END /etc/rc.conf ###
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lo Interface doesn't support scanning.
eth0 Interface doesn't support scanning.
eth1 Scan completed :
Cell 01 - Address: 00:19:70:29:89:54
ESSID:"MyOtherWifi"
Protocol:IEEE 802.11bg
Mode:Master
Frequency:2.412 GHz (Channel 1)
Encryption key:on
Bit Rates:1 Mb/s; 2 Mb/s; 5.5 Mb/s; 11 Mb/s; 6 Mb/s
9 Mb/s; 12 Mb/s; 18 Mb/s; 24 Mb/s; 36 Mb/s
48 Mb/s; 54 Mb/s
Quality=61/100 Signal level=-64 dBm
Extra: Last beacon: 406ms ago
The router ip is 192.168.1.1, and subnet mask is 255.255.255.0
Dhcp server is active.
Now I try to configure a new wireless connection manually:
$ sudo iwconfig eth1 essid MyOtherWifi key s:XXXXXXXXX
$ iwconfig
lo no wireless extensions.
eth0 no wireless extensions.
eth1 IEEE 802.11g ESSID:"MyOtherWifi"
Mode:Managed Frequency:2.412 GHz Access Point: 00:19:70:29:89:54
Bit Rate:54 Mb/s Tx-Power=20 dBm Sensitivity=8/0
Retry limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=0/100 Signal level=-61 dBm Noise level=-91 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:98
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$ sudo route add default gw 192.168.1.1
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eth1 Link encap:Ethernet HWaddr XXXXXXXXXXXXX
inet addr:192.168.1.10 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::212:f0ff:fe09:a72c/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:37 dropped:37 overruns:0 frame:0
TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:540 (540.0 b)
Interrupt:20 Base address:0x8000 Memory:b8006000-b8006fff
$ ping -c3 192.168.1.1
PING 192.168.1.1 (192.168.1.1) 56(84) bytes of data.
From 192.168.1.10 icmp_seq=1 Destination Host Unreachable
From 192.168.1.10 icmp_seq=2 Destination Host Unreachable
From 192.168.1.10 icmp_seq=3 Destination Host Unreachable
--- 192.168.1.1 ping statistics ---
3 packets transmitted, 0 received, +3 errors, 100% packet loss, time 2009ms
pipe 3
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ping: unknown host www.google.com
What the heck? I seem to have gotten the wished IP, why can't I connect?
Out of ideas, I try via a dhcp request:
$ sudo dhcpcd -d -t 140 eth1
Password:
dhcpcd: version 5.2.1 starting
dhcpcd: eth1: executing `/usr/lib/dhcpcd/dhcpcd-run-hooks', reason PREINIT
dhcpcd: eth1: executing `/usr/lib/dhcpcd/dhcpcd-run-hooks', reason CARRIER
dhcpcd: eth1: reading lease `/var/lib/dhcpcd/dhcpcd-eth1.lease'
dhcpcd: eth1: rebinding lease of 192.168.1.33
dhcpcd: eth1: sending DHCP_REQUEST (xid 0xb2562539), next in 4.45 seconds
dhcpcd: eth1: sending DHCP_REQUEST (xid 0xb2562539), next in 7.36 seconds
dhcpcd: eth1: broadcasting for a lease
dhcpcd: eth1: sending DHCP_DISCOVER (xid 0xa3ddbccd), next in 4.27 seconds
dhcpcd: eth1: sending DHCP_DISCOVER (xid 0xa3ddbccd), next in 8.36 seconds
dhcpcd: eth1: sending DHCP_DISCOVER (xid 0xa3ddbccd), next in 16.04 seconds
dhcpcd: eth1: sending DHCP_DISCOVER (xid 0xa3ddbccd), next in 32.59 seconds
dhcpcd: eth1: sending DHCP_DISCOVER (xid 0xa3ddbccd), next in 63.92 seconds
dhcpcd: eth1: sending DHCP_DISCOVER (xid 0xa3ddbccd), next in 63.60 seconds
dhcpcd: timed out
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Try a complete power cycle, maybe the devices will refresh and 'find' each other
Power down the PC first then the router and then the modem - wait a minute or so -- then power them back up in reverse order waiting for the correct lights to come in each device before moving on to power up the next device
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Hi
I am experiencing wireless connection problem on 4s after ios 8.1 upgrade. The wireless icon appears showing that it's connected but webpages do not load. I have checked my internet connection with other devices and seems to be alright. what to do?
I have tried reseting the network settings and forgetting my wireless connection and re-connecting to it. I even backed up my phone on itunes and restored it, factory reseted it. Nothing seems to work.
Also after my upgrade to ios 8.1 my personal hotspot option under cellular data has disappeared.
Would you please help me out? I would really appreciate it.

Hi..
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I have a MacBook Pro and all of a sudden I cannot get wireless internet connectivity to my router or any other router, I get connectivity through the ethernet port but not wireless. This was working well till this morning

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BXB1905 wrote:
I tried the Apple diagnostics it did not work.
What do you mean it did not work! What were the results of the diagnostic tests?
Have you contacted your ISP to determine if the problem is on their end?
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Your profile confirms you are using Lion. Check out the following:
Troubleshooting Wi-Fi issues in OS X Lion and Mac OS X v10.6
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I have contacted at&t and they did what was nessary to unlock my phone was told to backup my phone and did that so know I just need to restore my phone with ituens which ituenes will not let me do cause I get message can not connect to cause of no internet connection wich is not true cause other wise you would not have gotten this

Try restoring the iPhone to factory settings. If you are having difficult restoring, put the iPhone into Recovery Mode and see if that then works:
http://support.apple.com/kb/ht1808
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"I just received a new wireless device"
If not from Verizon, then who? Did it come w/a manual? If not, have you contacted the vendor/manufacturer for instructions?
==========
"A Fix for "Your network preferences have been changed by another application" Error
In the Library/Preferences/SystemConfiguration/ folder delete the following:
com.apple.airport.preferences.plist
NetworkInterfaces.plist
preferences.plist
com.apple.nat.plist
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!http://i50.tinypic.com/izvwo1.gif!

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Hi, Passing on info I've learned.
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http://linksys.com/ui/files/WTR54GS/1.0_15/Setup-Wireless.htm
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Dang, the long URL is making for a really wide message. Is there a fix?
Message Edited by tony_vancouver on 02-28-2008 02:08 PM
Message Edited by tony_vancouver on 02-28-2008 02:12 PM

There are two conditions which must be met in order to use your WTR54GS to "extend" an incoming, wireless internet connection:
The incoming connection must be unsecured. You have already covered this point;
The security settings on your WTR54GS can only be set to "WEP," or to "Disabled." If you choose "WEP," then you can use either a 40/64-bit, or a 128-bit key.
If those two conditions have been met, then it works fine -- says the guy who is sharing one paid internet conneciton in his hotel amongst three devices, and with co-workers in nearby rooms.

Wireless internet connection with iBooks not working..

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