Tons of logfiles in the vss provider\logs directory

Hi,

during a routine control of my servers I found in the vss provider\logs directory for each day a snapshot for backup is performed, a log file which is empty, In the past, some of the logfiles contains messages, but since middle of october, all logfiles are empty (maybe because I installed a patch).

Does this should me give a hint of things not running perfectly?

I'm running BE 2012 now, last year I'm running BE2010.