Wireless connection keep dropping every 10 15 mint, but the direct (wire) stay connect ?

Installing your wireless driver on a Linux distribution is only half the battle.
Once it's installed, you have to configure it.
This means adding the network name, or SSID (service set identifier), and the passkey for your wireless network.
In older versions of Linux, this had to be done with the "iwconfig" command line tools.
Luckily, Linux Mint has incorporated a graphical utility for configuring your Ethernet and wireless adapters.
Open the "Control Center," which will be found under the main program menu on the bottom right of your computer screen.
Click the "Network Connections" icon under the "Internet and Network" section.

Click the "Wireless" tab in the "Network Connections" window.


Click the "Add" button.


Type the name for your wireless network in the "SSID" text box.


Choose one of the options under the "Mode" drop-down list. Most users will choose the "Infrastructure" option.


Click the "Security" tab.


Choose your network's security protocol from the "Security" drop-down list.


Type the key for your wireless network in the "Key" text box.


Click "Apply" to save the changes.


Click the network connection icon in the task bar. It will look like two computers and can be found next to the clock.


Click on the name of your wireless connection to connect to the network.



http://www.linuxmint.com/wiki/index.php/MintWifi - The_network_manager.

Activate a Wi-Fi Card for Linux Mint
Log into Mint as user root. Launch a command shell, either by logging in in text mode or by launching a Terminal window from the graphical desktop.

Type the following command into the shell:
iwconfig
Press "Enter." Make a note of the name chosen by Linux Mint for your Wi-Fi card it will be the only word displayed flush with the left edge of the screen.



Type the following command into the shell:
iwlist wlan0 scan
Replace "wlan0" with the name of the Wi-Fi card you noted earlier.
Press "Enter."
Mint will display a list of the wireless networks in range that you can potentially join.


Type the following command into the shell:
iwconfig wlan0 essid library-wireless
Replace "library-wireless" with the name of the network you want to join, from the list generated by the "iwlist" command. Linux Mint will join the network.
At this point you can browse the Web and access the Internet in other ways via the Wi-Fi card on your computer.

http://linux.die.net/man/8/iwlist

http://linux.die.net/man/8/iwconfig
Getting Started with Linux Mint
http://linuxgazette.net/137/lazar.html

What wireless adapter do you have ? Broadcom, Atheros, etc ? I also had some trouble installing Broadcom on my Compaq nx6325 on Ubuntu but Ubuntu has some good support sites... Here is an example for Mint for Broadcom drivers ...
http://community.linuxmint.com/tutorial/view/379

This is a known issue with this model.. The power supply is not large enough to handle the extra current that is needed when the unit broadcasts on wifi.

Hi,

we need to first figure out whether it the modem or the router which is dropping the connection.

Please connect one of your computer directly to the modem, by pass the router and access the internet. If the connection drops then its the modem which is dropping the connection and you need to contact your isp to check it.

If the internet works fine directly with the modem then its your router which is dropping the connection. To fix the router we can upgrade it firmware.

To upgrade the firmware please visit the link below;
http://homesupport.cisco.com/en-us/wireless/linksys/E1000

Note; If you are not comfortable upgrade the firmware then don’t do it. If not done properly then it can damage your router.

Rashish

Since the wireless works fine on your router, then it is possible that there is a problem either on your ethernet cable or on the port of the belkin router.
Try a different ethernet cable. (Ethernet cable is the one that is connected from your computer to the router.) If you don't have a spare cable, you can directly connect the computer to the modem, just to isolate the issue and determine if it is the cable or the computer itself.
If you have determined that the cable is working fine, then try a different port on the router.
I hope this helps!

does it work with other games?
if not it might be a problem with staying connected because the connection isn't very strong. try reseting the router by unplugging it for a few mins. then if that doesn't work try haveing a wired connection to the router, through the wall or directly.

try to update the router's firmware to the latest one, if conection is still dropping try lowering the MTU size(by default its set to auto) to 1492, 1480, 1472, 1450 check which MTU size will make you connection stable.

find the manufacturer/model # of your wireless adapter and download the latest driver from dell's website (you can go to support.dell.com and enter your service tag/laptop model # if you want).

give the dns value properly in the zyxel p660 and re-installed the driver of the usb adpater

Have you tried different ports on the router? If so have you tried other computers hard wired in? Hard wire in one of your laptops for awhile and see if they lose connection as well. If so then the problem is the router, but if they can stay connected then I would try either updating your network card drivers or getting a new network card perhaps. Let me know if that helps any.