Cable Forum - General Oh for... (maddeningly intermittent connection)

Hi. I'm having broadband problems (I have 152MB or whatever it's called)

Code:

Downstream Channels 



Lock Status         Channel ID         Frequency         Modulation         Rx Power         RxMER         Pre RS Errors         Post RS Errors

Locked         28         290750000 Hz         256 QAM         6.7 dBmV          37.9 dB         293         293

Locked         25         266750000 Hz         256 QAM         6.9 dBmV          37.6 dB         298         297

Locked         26         274750000 Hz         256 QAM         6.8 dBmV          37.4 dB         278         278

Locked         27         282750000 Hz         256 QAM         6.9 dBmV          37.9 dB         290         290

Locked         29         298750000 Hz         256 QAM         6.8 dBmV          37.9 dB         278         277

Locked         30         306750000 Hz         256 QAM         6.5 dBmV          37.4 dB         291         291

Locked         31         314750000 Hz         256 QAM         6.4 dBmV          38.3 dB         290         290

Locked         32         322750000 Hz         256 QAM         5.2 dBmV          37.6 dB         298         297

Code:

Upstream Channels 

Lock Status         Channel ID         Frequency         Modulation         Tx Power         Mode         Channel Bandwidth         Symbol Rate

Locked         5         46200000 Hz         ATDMA         48.3 dBmV         16QAM         6400000 Hz         5120 Ksym/sec

NotLocked         0         0 Hz                   0 dBmV                             0 Ksym/sec

NotLocked         0         0 Hz                   0 dBmV                             0 Ksym/sec

Locked         6         39400000 Hz         ATDMA         46.8 dBmV         16QAM         6400000 Hz         5120 Ksym/sec

It seems sometimes that my broadband works perfectly right until I start to use it. Every few minutes it seems to cut off. On my SH2. the middle icon will disappear and the fourth one down (double-headed arrow) will switch from blue steady to green flashing. Sometimes it will recover on its own - the green arrow will be steady and the blue tick will flash like mad, then they'll settle down as blue and steadyish. More frequently, the green will go steady, the blue tick will flash a few times and then disappear and the green arrow will flash like mad. This will keep repeating. When it can't "lock on" I normally have to reboot the hub.
I've had to disconnect the input cable from the splitter and connect it directly to the hub. This gives me more of a chance to be connected for a while; via the splitter it hardly ever managed a connection.

If I'm doing something else offline (watching freeview or having a meal) I keep an eye on it - it seems to be a steady connection. And them when when I try to go online it'll suddenly cut off again.
I can keep an eye on it via the thinkbroadband site on my mobile - it'll be a perfect connection for most of the afternoon and suddenly cut off as soon as I switch on my computer.

Here's today's graph. Cam you guess what time I started to use it this evening?

My Broadband Ping

(Apologies for any typos - I'm trying to get this uploaded while I still can).