Compiler/Debugger causing low virtual memory on XP?

[Karbon]

Something curious started happening a few weeks back to my Windows XP box here. Any time I compile something with kBilling I get a windows message saying that it is low on virtual memory. I got it just now with nothing but jaPBE running so I know the 3 gigs of real RAM and the additional 4 gigs of disk space Windows has reserved for virtual RAM just can't be used up.

The error goes away as quickly as it is displayed so it is nothing more than an annoyance (I don't see any system speed problem before or after the warning message).

I'm stumped. Does anyone have any ideas? Again, I can only get this to happen when I compile/debug using the latest version of PB (4.20).