TV freezes on some channel changes (1 Viewer)

[rexdog]

MediaPortal Version: 1.1.1
MediaPortal Skin: xface
Windows Version: W7
CPU Type: X4 630
HDD: 2 x1Gb Samsung
Memory: 4GB
Motherboard: Lanparty 790FX
Video Card: gt220
Video Card Driver: 8.17.11.9745
Sound Card: na
Sound Card AC3:
Sound Card Driver: na
1. TV Card: digital now dual digital pci
1. TV Card Type: dvt-b
1. TV Card Driver:
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec:
MPEG2 Audio Codec:
h.264 Video Codec:
Satelite/CableTV Provider:
HTPC Case:
Cooling:
Power Supply: antec eartwatts 380W
Remote: windows mce
TV:
TV - HTPC Connection: vga

I have a problem of MP freezing when I change to channels that display "No data available".

It doesnt happen all the time, typically after watching the same channel for a while, then changing. It was happening under 1.1.0, and now on 1.1.1. It wasn't so much of a problem before as I only had one such channel (ABC24), but after recently re-scanning, I've also got 7mate and GEM.

Appeciate thoughts/assistance

 

[rexdog]

I deleted the channels, and re-scanned, and now have EPG.

The error is less common than before, but it is still occuring - but only on these selected channels.

Its wierd, so now I'm thinking signal strenght (but its strange that all the new channels have this issue?), or something to do with the buffer writer?

I'v read that a seperate HDD is recommened for tv buffering (and maybe recorded shows) - does anyone have an opinion on this?

cheers