Problems with safari, on iPhone 4S, 6.1

Guys, help me, please, with annoying safari bug. :( There is no sound, when I open videos in safari (youtube, etc.). Also, the browser crashes, when I trying to open different audio streams (i-net radios, for example). Here is the crash report:

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<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>AutoSubmitted</key>
<true/>
<key>SysInfoCrashReporterKey</key>
<string>25f8f60804fa77de3b72627a494617feabb43b2d</string>
<key>bug_type</key>
<string>187</string>
<key>description</key>
<string>Incident Identifier: EA51B2A7-D592-491A-8B79-FE0CD895607D
CrashReporter Key: 25f8f60804fa77de3b72627a494617feabb43b2d
Report Type: 187
Sandbox Violation: MobileSafari deny ipc-posix-shm AppleABL.54.5

Process: MobileSafari [543]
Path: /Applications/MobileSafari.app/MobileSafari
Load Address: 0x87000
Identifier: MobileSafari
Version: ??? (???)
Code Type: arm (Native)
Parent Process: launchd [1]

Date/Time: 2013-06-17 17:19:23.788 +0200
OS Version: iOS 6.1 (10B142)
Report Version: 104

Thread 0:
0 libsystem_kernel.dylib 0x395b29d0 __shm_open + 12
1 AudioToolbox 0x30d6a0a9 SharableMemoryBlock::Init(bool, char const*, unsigned long) + 145
2 AudioToolbox 0x30e2266d IPCAUSharedMemoryBase::Init(bool, SharedABLToken&amp;, AudioStreamBasicDescription const*, unsigned int, unsigned long) + 533
3 AudioToolbox 0x30e21a13 ClientProcessingTap::InitTap(AudioStreamBasicDescription&amp;, unsigned int, SharedABLToken&amp;, SharedABLToken&amp;) + 183
4 AudioToolbox 0x30e20db3 AudioQueueProcessingTapNew_CMClient + 491
5 MediaToolbox 0x3257c361 MTAudioProcessingTapCallbacksServer_NotificationIsPending + 437
6 MediaToolbox 0x3257cda5 MTAudioProcessingTapCallbacks_server + 105
7 libdispatch.dylib 0x394d3a05 dispatch_mig_server$VARIANT$mp + 117
8 libdispatch.dylib 0x394d2139 _dispatch_source_invoke$VARIANT$mp + 253
9 libdispatch.dylib 0x394cfe91 _dispatch_queue_drain$VARIANT$mp + 81
10 libdispatch.dylib 0x394cfdc1 _dispatch_queue_invoke$VARIANT$mp + 41
11 libdispatch.dylib 0x394d091d _dispatch_root_queue_drain + 185
12 libdispatch.dylib 0x394d0ac1 _dispatch_worker_thread2 + 85
13 libsystem_c.dylib 0x39500a11 _pthread_wqthread + 361
14 libsystem_c.dylib 0x395008a4 start_wqthread + 8

Binary Images:
0x30d63000 - 0x30febff7 AudioToolbox armv7 &lt;bb11489c87e93a3b8c26aa995a2fdec9&gt; /System/Library/Frameworks/AudioToolbox.framework/AudioToolbox
0x323b2000 - 0x3262cff7 MediaToolbox armv7 &lt;ed439fc5c9a03f8b9fae43af33de8a57&gt; /System/Library/Frameworks/MediaToolbox.framework/MediaToolbox
0x394ca000 - 0x394e7ff9 libdispatch.dylib armv7 &lt;9323bb560d4e3a3fb41efdc78bd0cf94&gt; /usr/lib/system/libdispatch.dylib
0x394fa000 - 0x39580ff4 libsystem_c.dylib armv7 &lt;cacc68d271e53338b7780c26f651b767&gt; /usr/lib/system/libsystem_c.dylib
0x395a1000 - 0x395b7ffd libsystem_kernel.dylib armv7 &lt;8e995919df713a8783f23e7f6649bf09&gt; /usr/lib/system/libsystem_kernel.dylib

</string>
<key>name</key>
<string>MobileSafari</string>
<key>os_version</key>
<string>iOS 6.1 (10B142)</string>
<key>system_ID</key>
<string></string>
<key>version</key>
<string>104</string>
</dict>
</plist>