What's with white stains on new vinyl?

Discussed earlier this year.

See here:

http://forum.audiogon.com/cgi-bin/fr.pl?eanlg&1207578074&read&keyw&zzsilicone

This was discussed in the Phonogram listserve recently. Apparently, RTI experienced an INTERMITTANT problem with a chemical reaction coming from some of the record sleeves that leaves white marks on the LANDS, not in the GROOVES. After finally figuring out what was causing the problem (apparently a frustrating search because it was so intermittant), they've switched to a 4mil poly sleeve that they believe will cure the problem.

FWIW, I have dozens of RTI pressed LPs and have yet to see this on any of my LPs, which is probably just an indication of how intermittant this is. (I do note that your LPs may or not be pressed by RTI.)
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I recently purcased 4-5 pressings from Analogue Productions that have these stains, but I cannot detect any sonic impact.

White stains on Vinyl? Must be one horny puppy at the packaging plant!

Dear Madfloyd: I have some LPs with that " trouble ", the last one Hugh Masekela one. In none of those LPs that " trouble " interfere with the quality performance and that's why I never ask or send it back to my LP's source.

Now, if like you posted " are sometimes audible " then my advise is that you ask fo send it back.

Regards and enjoy the music.
Raul.