Can someone help me with this please?

[crazy_ate]

I have a solution to this problem.

I had exactly the same problem.  Just popped up out of the blue a few weeks back -- my internet connection would go down about every 20 minutes, some times more frequently, somethimes less.  A sample of my error log is below:

2008-07-02 12:22:45 3-Critical 0x040D9A2C DHCP WARNING - Non-critical field invalid in response.

2008-07-02 12:22:42 3-Critical 0x040D9964 DHCP FAILED - Discover sent, no offer received

2008-07-02 12:22:31 3-Critical 0x04E33948 No Ranging Response received - T3 time-out

2008-07-02 12:22:13 3-Critical 0x04E33A10 Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 timeout

2008-07-02 12:21:41 3-Critical 0x04E33A74 Started Unicast Maintenance Ranging - No Response received - T3 time-out

2008-07-02 12:18:21 3-Critical 0x040D9A2C DHCP WARNING - Non-critical field invalid in response.

After much thought I did three things:

[1]  I loosened and retightened all my F connectors.  At the drop outside and at the two way splitter that takes one leg to the cable modem and the other leg to my 4-way amplified splitter for my TV's.

Result = NG

[2]  Next I made up a new RU6 cable to run from the modem to the splitter thinking the old cable might be shot.

Result = NG

[3]  I REPLACED THE TWO WAY SPLITTER

Result = NO MORE PROBLEMS

Apparently these little puupies can and do go bad.  In addition, I have seen where cable techs recommend not using gold plated splitters -- my old one was gold plated made by GE.

Problem solved and no a single friggin' error in the past 48 hours.  Incidentally my modem is a 2002 SB5100 and my service is Optimum Online in Morris County NJ.  Also running through an AT&T VOIP ATA and a Linksys wireless router.