Index: /trunk/src/VBox/Devices/Audio/DrvHostPulseAudio.cpp
===================================================================
--- /trunk/src/VBox/Devices/Audio/DrvHostPulseAudio.cpp	(revision 73653)
+++ /trunk/src/VBox/Devices/Audio/DrvHostPulseAudio.cpp	(revision 73654)
@@ -416,5 +416,5 @@
     pStrm->cUnderflows++;
 
-    Log2Func(("Warning: Hit underflow #%RU32\n", pStrm->cUnderflows));
+    LogRel2(("PulseAudio: Warning: Hit underflow #%RU32\n", pStrm->cUnderflows));
 
     if (   pStrm->cUnderflows  >= 6                /** @todo Make this check configurable. */
@@ -780,5 +780,5 @@
     {
         pCfgAcq->Backend.cfPeriod     = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, pStreamPA->BufAttr.minreq);
-        pCfgAcq->Backend.cfBufferSize = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, pStreamPA->BufAttr.tlength);
+        pCfgAcq->Backend.cfBufferSize = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, pStreamPA->BufAttr.tlength * 2); /* Use "double buffering". */
         pCfgAcq->Backend.cfPreBuf     = PDMAUDIOSTREAMCFG_B2F(pCfgAcq, pStreamPA->BufAttr.prebuf);