[Captivate Q&A, Help & Troubleshooting] Organized_Chaos:
Yes. This is what I'm using now:

# begin build properties
# autogenerated by buildinfo.sh
ro.build.id=JRO03U
ro.build.display.id=JRO03U
ro.build.version.incremental=L700FH05
ro.build.version.sdk=16
ro.build.version.codename=REL
ro.build.version.release=4.0.1
ro.build.date=Tue Sept 11 10:03:23 KST 2012
ro.build.date.utc=1346157838
ro.build.type=user
ro.build.user=se.infra
ro.build.host=SEI-29
ro.build.tags=release-keys
ro.product.model=Nexus S
ro.product.brand=Google
ro.product.name=sodu
ro.product.device=crespo
ro.product.board=aries
ro.product.cpu.abi=armeabi-v7a
ro.product.cpu.abi2=armeabi
ro.product.manufacturer=Google
ro.product.locale.language=en
ro.product.locale.region=US
ro.sf.lcd_density=200
ro.wifi.channels=
ro.board.platform=s5pc110
# ro.build.product is obsolete; use ro.product.device
ro.build.product=toro
# Do not try to parse ro.build.description or .fingerprint
ro.build.description=mysidspr-user 4.1.1 JRO03U L700FH05 release-keys
ro.build.fingerprint=samsung/mysidspr/toro:4.1.1/JRO03U/L700FH05:user/release-keys
# end build properties
#
# system.prop for toro
#

#
# GSM
#
rild.libpath=/system/lib/libsec-ril.so
rild.libargs=-d /dev/ttyS0
ro.telephony.ril_class=SamsungRIL
ro.telephony.ril.v3=icccardstatus,datacall,signalstrength,facilitylock
mobiledata.interfaces=pdp0,eth0,gprs,ppp0
ro.ril.hsxpa=2
ro.ril.gprsclass=12
ro.ril.hsdpa.category=16
ro.ril.hsupa.category=8
ro.ril.hep=1
ro.ril.def.agps.mode=2
ro.ril.def.agps.feature=1
net.ppp0.dns1=8.8.8.8
net.ppp0.dns2=8.8.4.4
net.dns1=8.8.8.8
net.dns2=8.8.4.4

#
# NET
#
net.tcp.buffersize.default=4096,87380,256960,4096, 16384,256960
net.tcp.buffersize.wifi=4096,87380,256960,4096,163 84,256960
net.tcp.buffersize.umts=4096,87380,256960,4096,163 84,256960
net.tcp.buffersize.gprs=4096,87380,256960,4096,163 84,256960
net.tcp.buffersize.edge=4096,87380,256960,4096,163 84,256960

#
# AUDIO_TWEAKS
#
ro.service.swiqi.supported=true
persist.service.swiqi.enable=1

#
# TWEAKS
#
debug.kill_allocating_task=0
persist.sys.ui.hw=1
ro.debuggable=1
debug.performance.tuning=1
video.accelerate.hw=1
debug.egl.profiler=1
debug.egl.hw=1
debug.composition.type=gpu
ro.config.disable.hw_accel=false
ro.ril.disable.power.collapse=1
pm.sleep_mode=1
persist.sys.shutdown.mode=hibernate
persist.sys.purgeable_assets=1
windowsmgr.max_events_per_sec=200
profiler.force_disable_err_rpt=1
profiler.force_disable_ulog=1
ro.cm.version=10
windowsmgr.support_rotation_270=true
ro.max.fling_velocity=12000
ro.min.fling_velocity=8000
debug.sf.hw=1
wifi.supplicant_scan_interval=240
ro.sf.lcd_density=240
ro.config.vc_call_vol_steps=7
ro.telephony.call_ring.delay=0
ro.HOME_APP_ADJ=1
media.aac_51_output_enabled=true
media.stagefright.enable-player=true
media.stagefright.enable-meta=true
media.stagefright.enable-scan=true
media.stagefright.enable-http=true
media.stagefright.enable-rtsp=true
media.stagefright.enable-record=false
ro.media.enc.jpeg.quality=100
ro.media.dec.jpeg.memcap=8000000
ro.media.enc.hprof.vid.bps=8000000
ro.media.panorama.defres=3264x1840
ro.media.panorama.frameres=1280x720
ro.camcorder.videoModes=true
ro.media.enc.hprof.vid.fps=25

#
# ADDITIONAL_YAOS_UPDATER
#
ro.update.version=3.1.2

#
# ADDITIONAL_BUILD_PROPERTIES
#
wifi.interface=wlan0
keyguard.no_require_sim=true
ro.url.legal=http://www.google.com/intl/%s/mobile/android/basic/phone-legal.html
ro.url.legal.android_privacy=http://www.google.com/intl/%s/mobile/android/basic/privacy.html
ro.com.google.clientidbase=android-google
ro.com.android.wifi-watchlist=GoogleGuest
ro.setupwizard.enterprise_mode=1
ro.com.android.dateformat=MM-dd-yyyy
ro.com.android.dataroaming=false
ro.config.ringtone=Ring_Synth_04.ogg
ro.config.notification_sound=pixiedust.ogg
ro.config.alarm_alert=Alarm_Classic.ogg
ro.carrier=unknown
ro.opengles.version=131072
ro.com.google.locationfeatures=1
ro.com.google.networklocation=1
ro.adb.qemud=1
ro.vold.umsdirtyratio=20
ro.vold.switchablepair=/mnt/emmc,/mnt/sdcard
ro.kernel.android.checkjni=0
ro.kernel.checkjni=0
dalvik.vm.dexopt-data-only=1
dalvik.vm.verify-bytecode=false
dalvik.vm.execution-mode=int:jit
dalvik.vm.dexopt-flags=m=v,o=y
dalvik.vm.jmiopts=forcecopy
dalvik.vm.heapstartsize=5m
dalvik.vm.heapgrowthlimit=48m
dalvik.vm.heapsize=128m
dalvik.vm.lockprof.threshold=500
dalvik.vm.dexopt-flags=m=y
net.bt.name=Android
dalvik.vm.stack-trace-file=/data/anr/traces.txt
persist.cust.tel.eons=1
ro.ril.enable.amr.wideband=1
ro.config.hw_fast_dormancy=1
ro.config.hw_quickpoweron=true
persist.sys.use_dithering=1

Should I change the DPI to something more standard?

Edit: I didn't see a difference in the market after setting DPI to 240 (default?). I cleared data/cache for the Play Store and still nothing.