When launching Second Life Release 7.2.3.19375695301 (64bit)
folders start to appear in the directory C:\Program Files
Folder names like:
chrome_url_fetcher_XXXX_XXXX (approximately 5-15 folders are created per minute. If they are not cleaned manually, more than 1000 can accumulate per day.)
chrome_BITS_XXXX_XXXX
also
chrome_Unpacker_BeginUnzippingXXXX
with a zero file privacy-sandbox-attestations.dat
but there are not many of them
These folders appear especially frequently when launching the built-in browser, for example, when accessing the profile page on the official website.
This also happens on Firestorm-Betax64 7.2.3.79946(AVX)