SOLVED: p61-IMS mega-dropping connection every 5 mins

[adamuadamu]

hi everybody
I've noticed that every couple of minutes my PBO behaves as if it was dropping connection -ie. while streaming IPTV it stops (and in most cases doesn't resume by itself, you have to stop and playback again manually), while watching podcasts/YT,listening to internet radios - the same as above, while copying files via smb - randomly, I was able to push 3gb yesterday w/o retries, but sometimes pushing 200mbs is done after two or tree retries; even telnet connection interrupts for no reason; sometimes I'm able to login, but it hangs while typing a line-long copy command

it's "wired" connection - actually PBO is wired to TP-Link WA500G AP Client device. Logging to my router I can see the connection between router and the PBO is not lost, but for approx. 15seconds I can do nothing about network on my PBO except to wait for self-recovery

I would rather exclude other hardware - I had my tv connected to the same AP Client device before and was able to stream video over DLNA or uPnP or up/download files to a HDD attached to it with no interrupts like mentioned above. Also tried to use the same "wired" connection with my laptop and no issues at all. I'm also able to stream all the content that stutters on PBO with my laptop - like watching the same IPTV stream for hours on other devices at home

All other wireless devices (two laptops with win7, a laptop with xp pro, an android phone, a symbian phone) work flawlessly being connected to the same AP.

additional info that might be useful:
- when network activity of PBO freezes, there's no red diode activity on the front of the device - it doesn't blink then
- I can't obtain IP address manually - I type correct settings (for example: IP: 192.168.1.11, mask:255.255.255.2,gateway:192.168.1.1,dns:8.8.8.8 ) - it passes the check, but it doesn't establish connection; DHCP auto works
- I can change network settings immediately after power-on; after using IMS services and back to net settings-> all three options are grayed-out, only power-off/power on from remote helps

any ideas?
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ok, seems I've found the solution - the culprit was OpenWRT firmware on my home router (TP-Link wr1043nd). due to some other reasons I ended up giving a try to DD-WRT and the connection seems stable and the PBO doesn't drop connections.
I can't say anything how it would work with stock fw, as the latter doesn't offer printserver option(=useless for me)