LinuxQuestions.org - ADSL over USB modem wierd bug

i got ALE 070 adsl usb modem, which i connect to via eci drivers.
connection actually works (believe it or not), although it took me a module to compile on the kernel got the bitch running.
But here i got this wierd bug, if i open a consuming program (e.g. streaming radio, xMule) after some time (2 to 15 minutes) my modem stops outputing any data but still inputs, (all tcp packets still waiting for response and unreplied pings get me disced anyway).
however it seems i can download from http for an hour or even more without having this. (wierd)
the support channel of eci driver only said it might be my ohci usb driver but didn't say anything about what it takes to change it to uhci or could this be something else.
i'm on redhat 9 kernel 2.4.20-19.9
so if u got any suggestions or if u can explain about the diference between ohci and uhci (and if possible how to switch) or is this really related to my case.

Code:

[phantom@phntm phantom]$ /sbin/ifconfig ppp0

ppp0      Link encap:Point-to-Point Protocol

          inet addr:81.218.170.48  P-t-P:81.218.170.1  Mask:255.255.255.255

          UP POINTOPOINT RUNNING NOARP MULTICAST  MTU:1500  Metric:1

          RX packets:38154 errors:0 dropped:0 overruns:0 frame:0

          TX packets:39474 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:3

          RX bytes:12809520 (12.2 Mb)  TX bytes:4046819 (3.8 Mb)

[root@phntm bin]# ./eci-doctor.sh

You are using linux kernel version 2.4.20-19.9

Support for USB is OK

Preliminary USB device filesystem is OK

dabusb module is not loaded: OK

ehci-hcd module is not loaded: OK

OHCI support is OK

/dev/ppp is OK

HDLC support is OK

HDLC support is OK (no bug)

pppd version 2.4.1

You are using pppd version  (untested)

You have an /etc/ppp/options file. Options in this file may conflict with

options from /etc/ppp/peers/adsl. We suggest to remove this file or make a

backup copy.

PPP connection is OK

Default route over ppp0 is OK

Everything is OK