Sorry, then I didnt get your problem correctly: you are talking just about DVB-EPG. Look in the epg.log if the epg is written correctly. The data is stored in the MP-database, so you a SQL-Browser for this (depends which database you use).
You can also try to "refresh epg", helped me sometimes.
Here's my epg.log - I think it shows that listings are being grabbed and inserted into the database, but still not appearing in Guide.
2009-04-02 13:47:11.734375 [TVService]: EPG: grabber initialized for 1 transponders..
2009-04-02 13:47:13.125000 [DVB EPG timer]: epg:Grab for card:#1 transponder #1/1 channel: RTE 1
2009-04-02 13:47:13.140625 [DVB EPG timer]: EpgCard: grab epg on card: #1 transponder: #0 ch:RTE 1
2009-04-02 13:47:18.015625 [DVB EPG timer]: EpgGrabbing: Start
2009-04-02 13:47:18.031250 [DVB EPG timer]: EpgCard: card: 1 starting to grab DVBT:tv:RTE RTE 1 Freq:738000 ONID:8564 TSID:1001 SID:1101 PMT:0x76D FTA:False LCN:1 BandWidth:8
2009-04-02 13:47:48.031250 [10]: EpgCard: allow grabbing for 30 seconds on card 1
2009-04-02 13:47:49.562500 [12]: EPG: grabber stopped..
2009-04-02 13:47:49.562500 [12]: EpgCard: card: 1 stop grabbing
2009-04-02 13:47:49.562500 [12]: EpgGrabbing: Stop - user epg
2009-04-02 15:08:58.953125 [12]: EPG: grabber initialized for 1 transponders..
2009-04-02 15:08:59.968750 [DVB EPG timer]: epg:Grab for card:#1 transponder #1/1 channel: RTE 1
2009-04-02 15:08:59.968750 [DVB EPG timer]: EpgCard: grab epg on card: #1 transponder: #0 ch:RTE 1
2009-04-02 15:09:02.812500 [DVB EPG timer]: EpgGrabbing: Start
2009-04-02 15:09:02.828125 [DVB EPG timer]: EpgCard: card: 1 starting to grab DVBT:tv:RTE RTE 1 Freq:738000 ONID:8564 TSID:1001 SID:1101 PMT:0x76D FTA:False LCN:1 BandWidth:8
2009-04-02 15:09:32.828125 [5]: EpgCard: allow grabbing for 30 seconds on card 1
2009-04-02 15:10:02.828125 [10]: EpgCard: allow grabbing for 60 seconds on card 1
2009-04-02 15:10:09.031250 [13]: dvb:mhw ready MHW 0 titles found
2009-04-02 15:10:09.046875 [13]: dvb:dvb ready.EPG 8 channels
2009-04-02 15:10:09.109375 [13]: Epg: card:1 received epg for 8 channels
2009-04-02 15:10:09.109375 [EPG Update thread]: Epg: card:1 Updating database with new programs
2009-04-02 15:10:09.125000 [EPG Update thread]: IdleEpgGrabber: RTE 1 lastUpdate:01/04/2009 19:16:51
2009-04-02 15:10:09.156250 [EPG Update thread]: IdleEpgGrabber: RTE 1 is marked to have epg gaps. Calculating them...
2009-04-02 15:10:09.156250 [EPG Update thread]: IdleEpgGrabber: RTE 1 Found 0 epg holes.
2009-04-02 15:10:09.625000 [EPG Update thread]: - Inserted 124 epg entries for channel RTE 1
2009-04-02 15:10:09.625000 [EPG Update thread]: IdleEpgGrabber: RTE 2 lastUpdate:01/04/2009 19:16:48
2009-04-02 15:10:09.625000 [EPG Update thread]: IdleEpgGrabber: RTE 2 is marked to have epg gaps. Calculating them...
2009-04-02 15:10:09.625000 [EPG Update thread]: IdleEpgGrabber: RTE 2 Found 0 epg holes.
2009-04-02 15:10:09.984375 [EPG Update thread]: - Inserted 151 epg entries for channel RTE 2
2009-04-02 15:10:09.984375 [EPG Update thread]: IdleEpgGrabber: TV3 lastUpdate:01/04/2009 19:16:49
2009-04-02 15:10:09.984375 [EPG Update thread]: IdleEpgGrabber: TV3 is marked to have epg gaps. Calculating them...
2009-04-02 15:10:09.984375 [EPG Update thread]: IdleEpgGrabber: TV3 Found 0 epg holes.
2009-04-02 15:10:10.218750 [EPG Update thread]: - Inserted 85 epg entries for channel TV3
2009-04-02 15:10:10.234375 [EPG Update thread]: IdleEpgGrabber: TG4 lastUpdate:01/04/2009 19:16:51
2009-04-02 15:10:10.234375 [EPG Update thread]: IdleEpgGrabber: TG4 is marked to have epg gaps. Calculating them...
2009-04-02 15:10:10.234375 [EPG Update thread]: IdleEpgGrabber: TG4 Found 0 epg holes.
2009-04-02 15:10:10.593750 [EPG Update thread]: - Inserted 163 epg entries for channel TG4