[mythtv] problems changing channel in live-tv

[Simon Kenyon]

i have the following problem:

if i change channel on a DVB-S card then that works

however on a channel coming from a STB with a channel changing script; 
if a press up or down arrow (one of more times - in browse mode) then if 
i hit enter the chanel changes to one specific channel (101 - the first 
one for me) and then will not change from that

in all cases (DVB-S and STB)  i can change channel by typing the channel 
number and hitting enter

so i don't think the channel changing script is in error (it has not 
changed in over 2 years)

for a long time i used svn #16772 aand did not have this problem
now i have moved to svn #17923(pretty recent trunk) and have observed 
this problem

anyone got any ideas?

as i have a workaround i suppose i can live with it - but it would be 
good to solve this one
regards
--
simon