This is my problem, all the info you need appeared in the BUG also. please,please help. I know it's a long thread but if you have seen a similar problem and you know how to solve it, please tell me.
P.S. The bolt/italic words or phrases are not like this in the bug, i made them like this so you would find the required info.

LimeWire version 5.1.2
Java version 1.6.0_13 from Sun Microsystems Inc.
Windows Vista v. 6.0 on x86
Free/total memory: 55690208/66650112

FATAL ERROR!
com.google.inject.CreationException: Guice configuration errors:
1) Error injecting constructor, java.lang.NullPointerException
at com.limegroup.gnutella.BandwidthManagerImpl.<init> (BandwidthManagerImpl.java:22)
for parameter 4 at com.limegroup.gnutella.downloader.HTTPDownloaderFa ctoryImpl.<init>(HTTPDownloaderFactoryImpl.java:49 )
1 error[s]
at com.google.inject.internal.Errors.throwCreationExc eptionIfErrorsExist(Errors.java:281)
at com.google.inject.InjectorBuilder.fulfillInjection Requests(InjectorBuilder.java:181)
at com.google.inject.InjectorBuilder.build(InjectorBu ilder.java:109)
at com.google.inject.Guice.createInjector(Guice.java: 131)
at com.google.inject.Guice.createInjector(Guice.java: 92)
at com.google.inject.Guice.createInjector(Guice.java: 80)
at org.limewire.ui.swing.Initializer.createLimeWire(I nitializer.java:358)
at org.limewire.ui.swing.Initializer.initialize(Initi alizer.java:116)
at org.limewire.ui.swing.GuiLoader.load(GuiLoader.jav a:81)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Nativ e Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknow n Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Un known Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.limewire.ui.swing.Main.main(Main.java:43)
Caused by: java.lang.NullPointerException
at org.limewire.nio.NIODispatcher.wakeup(NIODispatche r.java:590)
at org.limewire.nio.NIODispatcher.executeLaterAlways( NIODispatcher.java:389)
at org.limewire.nio.NIODispatcher.addThrottle(NIODisp atcher.java:211)
at org.limewire.nio.NBThrottle.<init>(NBThrottle.java :188)
at org.limewire.nio.NBThrottle.<init>(NBThrottle.java :149)
at com.limegroup.gnutella.BandwidthManagerImpl.<init> (BandwidthManagerImpl.java:25)
at com.limegroup.gnutella.BandwidthManagerImpl$$FastC lassByGuice$$4e943ad7.newInstance(<generated>)
at com.google.inject.internal.cglib.reflect.FastConst ructor.newInstance(FastConstructor.java:40)
at com.google.inject.DefaultConstructionProxyFactory* ****newInstance(DefaultConstructionProxyFactory.ja va:72)
at com.google.inject.ConstructorInjector.construct(Co nstructorInjector.java:91)
at com.google.inject.InjectorImpl$LateBoundConstructo r.get(InjectorImpl.java:482)
at com.google.inject.ProviderToInternalFactoryAdapter *****call(ProviderToInternalFactoryAdapter.java:43 )
at com.google.inject.InjectorImpl.callInContext(Injec torImpl.java:998)
at com.google.inject.ProviderToInternalFactoryAdapter .get(ProviderToInternalFactoryAdapter.java:40)
at com.google.inject.Scopes$1*****get(Scopes.java:49)
at com.google.inject.InternalFactoryToProviderAdapter .get(InternalFactoryToProviderAdapter.java:47)
at com.google.inject.FactoryProxy.get(FactoryProxy.ja va:53)
at com.google.inject.InjectorImpl$SingleParameterInje ctor.inject(InjectorImpl.java:858)
at com.google.inject.InjectorImpl.getParameters(Injec torImpl.java:877)
at com.google.inject.ConstructorInjector.construct(Co nstructorInjector.java:90)
at com.google.inject.InjectorImpl$LateBoundConstructo r.get(InjectorImpl.java:482)
at com.google.inject.ProviderToInternalFactoryAdapter *****call(ProviderToInternalFactoryAdapter.java:43 )
at com.google.inject.InjectorImpl.callInContext(Injec torImpl.java:998)
at com.google.inject.ProviderToInternalFactoryAdapter .get(ProviderToInternalFactoryAdapter.java:40)
at com.google.inject.Scopes$1*****get(Scopes.java:49)
at com.google.inject.InternalFactoryToProviderAdapter .get(InternalFactoryToProviderAdapter.java:47)
at com.google.inject.InjectorBuilder*****call(Injecto rBuilder.java:197)
at com.google.inject.InjectorBuilder*****call(Injecto rBuilder.java:192)
at com.google.inject.InjectorImpl.callInContext(Injec torImpl.java:990)
at com.google.inject.InjectorBuilder.loadEagerSinglet ons(InjectorBuilder.java:191)
at com.google.inject.InjectorBuilder.fulfillInjection Requests(InjectorBuilder.java:179)
... 12 more

-- listing session information --
Current thread: main
Active Threads: 13
Peak Number of Thread: 19
System Load Avg: -1.0
Objects Pending GC: 0
Free Space In Settings: 782796156928
Free Space In Incomplete: 782796156928
Free Space In Downloads: 782796156928
Heap Memory Usage: init = 67108864(65536K) used = 10961472(10704K) committed = 66650112(65088K) max = 266403840(260160K)
Non-Heap Memory Usage: init = 33718272(32928K) used = 29332984(28645K) committed = 38371328(37472K) max = 121634816(118784K)
-- listing threads --
RefQueueWorker@org.apache.http.impl.conn.tsccm.Con nPoolByRoute@1c01ba9: 1
RefQueueWorker@org.apache.http.impl.conn.tsccm.Con nPoolByRoute@1ff5c98: 1
Timer-0: 1
AWT-Shutdown: 1
CreationTimeCacheDeserializer: 1
Hasher: 1
FinalizableReferenceQueue: 1
main: 1
FirewallEventThread: 1
AWT-EventQueue-0: 1
Image Fetcher 0: 1
Image Fetcher 1: 1
AWT-Windows: 1

-- listing properties --
FRACTIONAL_UPTIME=0.018884746
LAST_EXPIRE_TIME=1243445650862
SESSIONS=53
TOTAL_CONNECTION_TIME=227432952
COUNTRY=
SHOW_TOTD=false
PREVIOUS_SHUTDOWN_WAS_GRACEFUL=false
CLIENT_ID=F27900758935E1F0CBFFD649857E7600
UPLOAD_SPEED=25
LAST_SHUTDOWN_TIME=1242152198535
DHT_NODE_ID=2A6A0AEDD29535E6D615E11743FE49C7FF95DE AA
DHT_MODE=PASSIVE_LEAF
CURRENTLY_RUNNING=true
LIBRARY_VERSION=FIVE_0_0
TOTAL_UPTIME=435737
PORT=18493
TOTAL_CONNECTIONS=72
MANAGE_OTHER_FILES=false
HARD_MAX_UPLOADS=0
MAX_SIM_DOWNLOAD=100
LAST_N_UPTIMES=3780;1560;660;1560;540;1980;12180;3 00...
OOB_ENABLED=false