I am now running new dust monitor code on h0epics2, which is a Ubuntu workstation. It is running under screen. There has been a bug in the previous code, such that data does not appear to have been recorded since March 15, 2012 for the following: Dust monitor in clean room over BSC8 H0:PEM-LVEA_DST15_3 any data for counts > 200 H0:PEM-LVEA_DST15_5 any data for counts > 200 Dust monitor in clean room over test stand in LVEA H0:PEM-LVEA_DST4_3 any data for counts > 200 H0:PEM-LVEA_DST4_5 any data for counts > 200 Dust monitor in OSB optics lab H0:PEM-LAB_DST1_3 any data for counts > 20,000 H0:PEM-LAB_DST1_5 any data for counts > 8,000 Dust monitor in OSB bake oven room H0:PEM-LAB_DST3_3 any data for counts > 20,000 H0:PEM-LAB_DST3_5 any data for counts > 8,000 This was because the audible alarms were set for these dust monitors at these levels. When these alarms went off a signal was sent which was read by the CDS code as an error. The CDS code then set the epics channel to INVALID, and the counts were not updated. This should be fixed in the new code.