RS Oph - disappearance of optical flickering after the outburst

CCD photometry  of the recurrent nova RS Oph has been performed with the 1.2m telescope at OHP.  On 2006 June 9.02 UT,  we estimate  B=12.72, V=11.36, R=10.21 with an accuracy ±0.02 in all bands.  The brightness of the object is already low and B magnitude is dropped below the pre-outburst level. 
    For a 5 hours long observation run, we obtained 143 points in Cousins B, with mean B=12.728±0.014 mag. During our run, only a trend of fading from  B=12.71±0.01 (on 2006 June 08.863)  to  B=12.74±0.01  (on June 09.083 UT) was visible.
    We have not detected flickering on minute-to-hour time scale with amplitude greater than 0.03 mag. The full amplitude of variability was <0.053 mag (including the observation errors of ±0.010). The standard deviation for the 143 points was only 0.014 mag.  To the best of our knowledge, it is the first time when no rapid  photometric variability in B band is observed in this object.  Usually in B band, RS Oph exhibits variability on minute-to-hour time scale with  amplitude 0.2-0.3 mag, and standard deviation 0.050-0.090 mag (Gromadzki et al.  2006, AcA 56, 97; and references therein).
    The absence of flickering indicates that the accretion disk around the white dwarf, is destroyed after the 2006 outburst. For our understanding of the disk-flickering connection in the symbiotic binaries,  it will be  important to follow the B band and to detect when and how the flickering will re-appear (i.e. will it appear first on minute or on hour time scale).