Gateway disfuncions - pinging router, pinging provider's DNS

My WRT54GL v1.1 router gateway is connected to the modem. Modem gets him an out IP address given by the internet provider, and then I have a local home network with standard 192.168.1.X address for my computers (hosts). And my notebook is in the same room as the gateway. This is what started happening few weeks ago...
When I have access to the Internet everything is ok. BUT, sometimes I don't have it so I tested pinging. This is what happens:
- by wireless I pinged my router address 192.168.1.1 and the results were cca 45% of packet loss (of 1000 pings)!!! And the connection was stated Excellent and it was never broken (it's allways excellent). So I tried with a wire connection to the LAN ports and the loss was around 5% (of 100 pings). It's not good, it should be 0! Time is around 1ms.
- but then, few minutes latter (and the distance and surroundings are the same) pinging to the gateway was loss-less, meaning it was 0%. Great! Even with the wire and by wireless. BUT now pinging to the providers DNS server was a disaster with 47% of packet loss!
- so i connected my notebook directly to the modem (providers network) and I tested pinging DNS server and it was loss-less, with 0% packet loss.
It happens now and then, in a few days back, more usual then the weeks before. And it is original and less then a year "old". It's on power 24/7. The restarting didn't helped, the firmware upgrade didn't helped, and I don't know what else to try or to do. It has the latest firmware version, there is only one wireless home network near but it's signal is low and it shouldn't make the problem. The notebook's network cards work with no problems on the other networks. And there is no one connected to the router but me (only my MAC address is seen...)
I need useful advice and help. Thanx!
d-_-b

I did a factory reset (again) and did a firmware upgrade, but this time I didn't upload the same configuration file as before - I did a new configuration. And now it works, partially - PC in the other room has a wireless connection and the internet connection, while the notebook near the router doesn't, but the wire connection works. I did a change in security key, I mach it with the profile (new, because I delete the last one) on the notebook - but it still can't get an IP address from the DHCP. But I'll do a research about solving that problem. There is a chance that the whole thing will break down again soon, because even before it was working for some time but then it crashed down again... Thanx again, I partially did what you've suggested.
d-_-b

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<code>
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</code>
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gv,
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The new firmware allows this, as they fixed the vpn listening port override to port 60443..
I port forwarded this to my router gateway 192.168.1.1
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So everything seems to be connecting.. But know get "The remote gateway is not responding" popup. I tried the suggested MTU setting with no luck.
After establishing a network share under map drive, this seems to have stop responding as well once this popup occurs.
Things like this should just not be so hard..
So I found this post in regards to my problem and hoping to here if anyone else has found a solution or work around here. Good night, some things are just not worth staying up late for,
http://forums.linksys.com/linksys/board/message?board.id=Wired_Routers&message.id=13651#M13651
Message Edited by MOTOGEEK on 12-10-2007 11:01 PM
Message Edited by MOTOGEEK on 12-10-2007 11:04 PM
Message Edited by MOTOGEEK on 12-10-2007 11:05 PM

Gateway disfuncions - pinging router, pinging provider's DNS

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