I have certainly seen this (under most awkward and unpleasant circumstances...) when using Perl in a commercial shared-hosting environment.   Hosting companies (natcherly...) impose absolute limits on the amount of RAM that a web request can use, and that limit can at times be fairly prohibitive.   My solution was to switch the site to dedicated hosting... which turned out to be the best solution for this and a variety of other reasons, and not significantly more expensive vs. the additional power thus gained.   (I pretty much don’t use shared hosting anymore, anywhere.)