V4L2 drivers - OV511 problems

Hia,
after the last update, i'm getting some weird problems, and would like to know if someone also is having or had it:
1) core/hybrid - USB gyro mouse and gyration remote stops, and are only enabled again after a reboot.
2) core/hybrid - USB camera, after a router reload stops. Unplugging and replugging does not help.
3) without any explanation, router reload occours.
The kernel being used is the 2.6.27-17.
It seems that something might be wrong with the USB subsystem. Any hint?

EDIT: After some tests, i suspect of the OV511 driver, which seems to be causing instability problems.
Unplugging the OV511 webcam, no problems.
Plugging back the OV511 webcam, after a time, gyro mouse stops working, no more PnP detection....of any webcam...
without the camera, the router does not unexpected reload.
This problem occurs with both kernel versions i have installed: 2.6.27-13 and 2.6.27-17.

TIA,
Paulo